Step 1:
The first step to converting 178400.4021311 to a fraction is to re-write 178400.4021311 in the form p/q where p and q are both positive integers. To start with, 178400.4021311 can be written as simply 178400.4021311/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 178400.4021311, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 178400.4021311/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 178400.4021311/1 each by 10000000:
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 178400.4021311 as a fraction:
356801/2 / 1