Step 1:
The first step to converting 266360.9911874 to a fraction is to re-write 266360.9911874 in the form p/q where p and q are both positive integers. To start with, 266360.9911874 can be written as simply 266360.9911874/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 266360.9911874, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 266360.9911874/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 266360.9911874/1 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 266360.9911874 as a fraction:
266361/1 / 1