Step 1:
The first step to converting 45290312.856646 to a fraction is to re-write 45290312.856646 in the form p/q where p and q are both positive integers. To start with, 45290312.856646 can be written as simply 45290312.856646/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 45290312.856646, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 45290312.856646/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 45290312.856646/1 each by 1000000:
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 45290312.856646 as a fraction:
45290312/1 / 1