Musk had the largest dollar gain on this year's list, according to Forbes, with a fortune of $151 billion, a $126.4 billion increase compared to $24.6 billion last year, when the Tesla and SpaceX executive ranked at No. 31.
The country's most successful companies have stepped up to the plate with offers of cash, supplies and other forms of relief.
Over the past decade, the world’s richest people got even richer.
Google’s co-founders are relinquishing their executive positions.
Sundar Pichai responded suggesting Marc Benioff run for office in 2020.
In total, the 20 richest Americans donated roughly $8.7 billion to charity in 2018, just 0.8 percent of their collective net worth.