This trend didn't last long as Adani's fortune arrowed down later and he ended his day by plunging to his earlier spot - the third richest person in the world.
He said he would have more time for side projects, including his space exploration company Blue Origin, his philanthropic initiatives, and overseeing The Washington Post.
The worth of the 49-year-old South African-born US business magnate is $186bn at 10.15 am in New York on Wednesday and with the new surge, Musk is $1.5bn richer than Bezos.