Bloomberg Billionaires Index, a daily ranking of the world's 100 wealthiest individuals, has listed Mukesh Ambani as India's richest for the sixth consecutive year and the 18th richest in the world, with a personal wealth of 24.7 billion dollars in 2012.
Mexican telecommunications magnate Carlos Slim remained the world's richest person last year, holding a personal fortune of more than 70 billion dollars.
Ambani, 55, Chairman and Managing Director of Reliance Industries, has increased his ranking from 19th to 18th position and his personal wealth from 21 billion dollars to 24.7 billion dollars in the world.
The world's top 100 billionaires got even richer in 2012, with their total wealth rising by around 15 per cent to 1.81 trillion dollars.
Microsoft founder Bill Gates and the founder of fashion retailer Zara, Amancio Ortega, rounded out the top three spots, with wealth estimated just over and just under 60 billion dollars.
Investor Warren Buffett is at fourth place, but added around five billion dollars to his fortune over the year despite donating a substantial amount to charity last year.
IKEA founder Ingvar Kamprad saw his net worth rising 16.6 per cent to approximately 40 billion dollars, putting him in fifth place on Bloomberg's billionaire's index. (ANI)