Where does Ayock find all this BS. When Fred Trump died in 1999, he had a net worth estimated at $250-300 million. Donald Trump has 4 brothers and sisters, so assuming the estate was evenly divided, Donald's share would have been less than $60 million (excluding estate taxes). Probably much less, as I'm guessing that much of the estate went to charity and Donald certainly didn't need the money anyway.
Let's assume it was $60 million and Donald simply put it in an SP500 index fund back then. From 1999 to now, the SP500 has not quite doubled, so $60 million would be worth less than $120 million now.
$120 million is nowhere near the estimated $3.8 billion of Trump's estate. So much fake news, it is hard to keep up with it all.