Step 1:
The first step to converting 671721.09190794 to a fraction is to re-write 671721.09190794 in the form p/q where p and q are both positive integers. To start with, 671721.09190794 can be written as simply 671721.09190794/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 671721.09190794, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 671721.09190794/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 671721.09190794/1 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 671721.09190794 as a fraction:
671721/1 / 1