World's richest person Elon Musk, with a net worth of $447 billion, is 360% richer than India's richest person Mukesh Ambani whose net worth is $97.1 billion, according to Bloomberg Billionaires Index. India's second-richest person Gautam Adani has a net worth of $79.3 billion. Musk has almost twice the wealth of the world's second wealthiest person, Jeff Bezos ($249 billion).