NEW DELHI: Indian businessman Gautam Adani has left behind Microsoft co-founder Bill Gates to become the world's fourth richest person, according to Forbes' Real-Time Billionaires List. 

The 60-year-old business tycoon's net worth reached $115.5 billion on Thursday eclipsing Gates whose fortunes are at $104.6 billion.

Reliance Industries (RIL) chairman and managing director Mukesh Ambani has been ranked on the 10th spot with a net worth of $90 billion.

Gates is believed to have slipped in the rankings after he announced that he would donate $20 billion from his wealth to his non-profit organisation. The richest woman on the list is L’Oreal’s Francoise Bettencourt Meyers and family with a net worth of $71 billion. She is placed on the 15th spot.

Tesla and SpaceX founder Elon Musk, who has been involved in a huge controversy after his bid to buy Twitter only to abandon it later, tops the list with $235.8 billion.

The Adani group Chairman is famed for turning a small commodities trading business into a conglomerate spanning ports, mines and green energy.

Adani said the group has won the tender for the privatisation of a port in Israel in partnership with Gadot.

The Port of Haifa is the largest of Israel's three major international seaports.

Adani Data Networks, along with Reliance Jio, Bharti Airtel and Vodafone Idea, has also applied to participate in the upcoming 5G auction. The spectrum auction, scheduled to start on July 26, may see aggressive bids for some frequency bands.