President Donald Trump's ranking in the Forbes list of wealthiest Americans has dropped, with the value of some of his Manhattan real estate holdings recently declining.
Forbes ranked the first billionaire president as the 248th-wealthiest person in America and put his wealth at $US3.1 billion ($A4 billion) . The year before, he was ranked 156th and Forbes said he was worth $US3.7 billion ($A4.7 billion).
As a candidate, Trump said his net worth was more than $US10 billion ($A13 billion), but Forbes pegged that figure at $US4.5 billion ($A5.7 billion) in September 2015. By Forbes' estimates, Trump's wealth has fallen 31 per cent in two years.
According to Forbes, half of Trump's wealth comes from New York City real estate. It says the value of luxury real estate is down, especially around Fifth Avenue. That sharply reduced the value of Trump Tower and other properties Trump owns or has stakes in.
Forbes also said some of Trump's golf properties declined in value and that he spent $US66 million ($A84 million) on the presidential campaign as well as $US25 million ($A32 million) to settle a fraud lawsuit brought by former students in his defunct Trump University program for real estate investors.
Forbes' list is once again topped by Microsoft co-founder Bill Gates with a net worth of $US89 billion ($A113 billion), followed by Amazon's Jeff Bezos and Berkshire Hathaway's Warren Buffett.
