Step 1:
The first step to converting 45436.540420488 to a fraction is to re-write 45436.540420488 in the form p/q where p and q are both positive integers. To start with, 45436.540420488 can be written as simply 45436.540420488/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 45436.540420488, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 45436.540420488/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 45436.540420488/1 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 45436.540420488 as a fraction:
90873/2 / 1