Step 1:
The first step to converting 43721.066569456 to a fraction is to re-write 43721.066569456 in the form p/q where p and q are both positive integers. To start with, 43721.066569456 can be written as simply 43721.066569456/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 43721.066569456, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 43721.066569456/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 43721.066569456/1 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 43721.066569456 as a fraction:
655816/15 / 1