Step 1:
The first step to converting 55643.432136416 to a fraction is to re-write 55643.432136416 in the form p/q where p and q are both positive integers. To start with, 55643.432136416 can be written as simply 55643.432136416/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 55643.432136416, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 55643.432136416/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 55643.432136416/1 each by 1000000000:
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 55643.432136416 as a fraction:
389504/7 / 1