Step 1:
The first step to converting 128638462.4261 to a fraction is to re-write 128638462.4261 in the form p/q where p and q are both positive integers. To start with, 128638462.4261 can be written as simply 128638462.4261/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 128638462.4261, which in this case is 4. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 128638462.4261/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 128638462.4261/1 each by 10000:
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 128638462.4261 as a fraction:
128638462/1 / 1