Step 1:
The first step to converting 128115157.72644 to a fraction is to re-write 128115157.72644 in the form p/q where p and q are both positive integers. To start with, 128115157.72644 can be written as simply 128115157.72644/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 128115157.72644, which in this case is 5. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 128115157.72644/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 128115157.72644/1 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 128115157.72644 as a fraction:
128115157/1 / 1