Finding the Fourth Proportional to 613,814.59, 847,106.71 and 372,107.35

Step by Step Solution

1. Step 1: Write the proportion equation
   613,814.59 : 847,106.71 = 372,107.35 : x
2. Step 2: Convert to fraction form
   613,814.59/847,106.71 = 372,107.35/x
3. Step 3: Cross multiply
   613,814.59x = 847,106.71 × 372,107.35
4. Step 4: Simplify right side
   613,814.59x = 315,214,633,025.32
5. Step 5: Solve for x
   x = 315,214,633,025.32/613,814.59
6. Step 6: Final answer
   x = 513,533.95