Step 1:
The first step to converting 720616.77909447 to a fraction is to re-write 720616.77909447 in the form p/q where p and q are both positive integers. To start with, 720616.77909447 can be written as simply 720616.77909447/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 720616.77909447, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 720616.77909447/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 720616.77909447/1 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 720616.77909447 as a fraction:
720617/1 / 1