Step 1:
The first step to converting 258487.64554633 to a fraction is to re-write 258487.64554633 in the form p/q where p and q are both positive integers. To start with, 258487.64554633 can be written as simply 258487.64554633/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 258487.64554633, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 258487.64554633/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 258487.64554633/1 each by 100000000:
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 258487.64554633 as a fraction:
516975/2 / 1