Step 1:
The first step to converting 269.78443540009 to a fraction is to re-write 269.78443540009 in the form p/q where p and q are both positive integers. To start with, 269.78443540009 can be written as simply 269.78443540009/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 269.78443540009, which in this case is 11. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 269.78443540009/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 269.78443540009/1 each by 100000000000:
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 269.78443540009 as a fraction:
13759/51 / 1