Step 1:
The first step to converting 613499.77861872 to a fraction is to re-write 613499.77861872 in the form p/q where p and q are both positive integers. To start with, 613499.77861872 can be written as simply 613499.77861872/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 613499.77861872, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 613499.77861872/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 613499.77861872/1 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 613499.77861872 as a fraction:
613500/1 / 1