Step 1:
The first step to converting 171745.67921873 to a fraction is to re-write 171745.67921873 in the form p/q where p and q are both positive integers. To start with, 171745.67921873 can be written as simply 171745.67921873/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 171745.67921873, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 171745.67921873/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 171745.67921873/1 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 171745.67921873 as a fraction:
515237/3 / 1