Step 1:
The first step to converting 419577.9861458 to a fraction is to re-write 419577.9861458 in the form p/q where p and q are both positive integers. To start with, 419577.9861458 can be written as simply 419577.9861458/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 419577.9861458, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 419577.9861458/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 419577.9861458/1 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 419577.9861458 as a fraction:
419578/1 / 1