Step 1:
The first step to converting 858466.3578078 to a fraction is to re-write 858466.3578078 in the form p/q where p and q are both positive integers. To start with, 858466.3578078 can be written as simply 858466.3578078/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 858466.3578078, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 858466.3578078/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 858466.3578078/1 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 858466.3578078 as a fraction:
858466/1 / 1