Finding the Fourth Proportional to 315,502.71, 472,499.64 and 181,978.17

Step by Step Solution

1. Step 1: Write the proportion equation
   315,502.71 : 472,499.64 = 181,978.17 : x
2. Step 2: Convert to fraction form
   315,502.71/472,499.64 = 181,978.17/x
3. Step 3: Cross multiply
   315,502.71x = 472,499.64 × 181,978.17
4. Step 4: Simplify right side
   315,502.71x = 85,984,619,812.86
5. Step 5: Solve for x
   x = 85,984,619,812.86/315,502.71
6. Step 6: Final answer
   x = 272,532.11