Step 1:
The first step to converting 425099.21378537 to a fraction is to re-write 425099.21378537 in the form p/q where p and q are both positive integers. To start with, 425099.21378537 can be written as simply 425099.21378537/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 425099.21378537, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 425099.21378537/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 425099.21378537/1 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 425099.21378537 as a fraction:
425099/1 / 1