Step 1:
The first step to converting 129030780.40431 to a fraction is to re-write 129030780.40431 in the form p/q where p and q are both positive integers. To start with, 129030780.40431 can be written as simply 129030780.40431/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 129030780.40431, which in this case is 5. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 129030780.40431/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 129030780.40431/1 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 129030780.40431 as a fraction:
129030780/1 / 1