Finding the Fourth Proportional to 626,645.98, 861,446.27 and 539,111.31

Step by Step Solution

1. Step 1: Write the proportion equation
   626,645.98 : 861,446.27 = 539,111.31 : x
2. Step 2: Convert to fraction form
   626,645.98/861,446.27 = 539,111.31/x
3. Step 3: Cross multiply
   626,645.98x = 861,446.27 × 539,111.31
4. Step 4: Simplify right side
   626,645.98x = 464,415,427,114.31
5. Step 5: Solve for x
   x = 464,415,427,114.31/626,645.98
6. Step 6: Final answer
   x = 741,112.91