After briefly becoming the second-richest person in the world, a relatively unknown infrastructure and energy mogul is now wealthier than the likes of Bezos and Gates.

Profile Of Adani Group Chairman, Gautam Adani

One of the richest men in the world is a self-proclaimed introvert.

Hindustan Times via Getty Images

According to Forbes calculations, Adani is the third richest man in the world, behind only Musk and Arnault, and he briefly overtook Arnault early Friday thanks to a surge in the stock price of several of his conglomerates.

The 60-year-old Adani, a self-made college dropout who first made his fortune thanks to a commodities and ports empire, has since acquired a variety of businesses in media, energy and transportation.

Adani has a low profile for his wealth due to his shyness.

The fortune of Adani has increased 15-fold since he appeared on the Forbes billionaires list in 2008.

In February, Adani became the wealthiest person in Asia as the share prices of his companies soared. Several of Adani's companies were included in Forbes' ranking of the 2,000 largest publicly traded companies in the world. He became the fifth-wealthiest person in the world when his wealth reached $100 billion in April. Bezos became the third-richest man this week, after Adani overtook Bill Gates as the wealthiest man in July.

Crucial Quote

Being an entrepreneur is my dream job. Adani told Forbes in 2010 that he couldn't take orders. He hoped to be remembered as someone who contributed to India's economic growth story.

Adani was kidnapped in 1997 and was the target of a terrorist attack in 2008. According to the Indian publication Times Now, in 1997 he was kidnapped at gun point and held for a large amount of money. The billionaire told the Financial Times that the kidnapping was one of several unfortunate incidents in his life. The restaurant at the Taj Mahal Palace Hotel was overtaken by terrorists during the Mumbai terrorist attacks in 2008. He was able to escape when soldiers entered the building.

Big Number

A total of $7 billion. On his 60th birthday in June, Adani promised to give away a lot of money. The Adani Foundation focuses on developing healthcare and education systems in India's rural areas.

A billionaire from India becomes Asia's richest person.

Fortune has gone past $100 billion, and India's Gautam Adani is now a billionaire.