Step 1:
The first step to converting 88888.421635928 to a fraction is to re-write 88888.421635928 in the form p/q where p and q are both positive integers. To start with, 88888.421635928 can be written as simply 88888.421635928/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 88888.421635928, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 88888.421635928/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 88888.421635928/1 each by 1000000000:
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 88888.421635928 as a fraction:
177777/2 / 1