Step 1:
The first step to converting 86578.47209268 to a fraction is to re-write 86578.47209268 in the form p/q where p and q are both positive integers. To start with, 86578.47209268 can be written as simply 86578.47209268/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 86578.47209268, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 86578.47209268/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 86578.47209268/1 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 86578.47209268 as a fraction:
173157/2 / 1