How long will my $1 million last if i withdraw $54,945 per year? 21 years using the following data...

  How long will my $1 million last if i withdraw $54,945 per year? 21 years using the following data...

"...years with an Average Investment Return (Before Taxes) of 4%, with a Marginal Tax Bracket of 10%, withdrawing $54,945 per year, with an Inflation Rate of ..."

Reference: www.creditdonkey.com via federalretiree.blogspot.com