Step 1:
The first step to converting 81269.638920523 to a fraction is to re-write 81269.638920523 in the form p/q where p and q are both positive integers. To start with, 81269.638920523 can be written as simply 81269.638920523/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 81269.638920523, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 81269.638920523/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 81269.638920523/1 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 81269.638920523 as a fraction:
243809/3 / 1