Step 1:
The first step to converting 172817.91775811 to a fraction is to re-write 172817.91775811 in the form p/q where p and q are both positive integers. To start with, 172817.91775811 can be written as simply 172817.91775811/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 172817.91775811, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 172817.91775811/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 172817.91775811/1 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 172817.91775811 as a fraction:
172818/1 / 1