Step 1:
The first step to converting 72144493.89426 to a fraction is to re-write 72144493.89426 in the form p/q where p and q are both positive integers. To start with, 72144493.89426 can be written as simply 72144493.89426/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 72144493.89426, which in this case is 5. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 72144493.89426/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 72144493.89426/1 each by 100000:
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 72144493.89426 as a fraction:
72144493/1 / 1