Step 1:
The first step to converting 539887.49396289 to a fraction is to re-write 539887.49396289 in the form p/q where p and q are both positive integers. To start with, 539887.49396289 can be written as simply 539887.49396289/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 539887.49396289, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 539887.49396289/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 539887.49396289/1 each by 100000000:
Step 3:
Now the last step is to simplify the fraction (if possible) by finding similar factors and cancelling them out, which leads to the following answer for 539887.49396289 as a fraction:
539887/1 / 1