Step 1:
The first step to converting 4778901.6402 to a fraction is to re-write 4778901.6402 in the form p/q where p and q are both positive integers. To start with, 4778901.6402 can be written as simply 4778901.6402/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 4778901.6402, which in this case is 4. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 4778901.6402/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 4778901.6402/1 each by 10000:
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 4778901.6402 as a fraction:
4778901/1 / 1