Finding the Fourth Proportional to 377,154.72, 520,472.88 and 216,061.92

Step by Step Solution

1. Step 1: Write the proportion equation
   377,154.72 : 520,472.88 = 216,061.92 : x
2. Step 2: Convert to fraction form
   377,154.72/520,472.88 = 216,061.92/x
3. Step 3: Cross multiply
   377,154.72x = 520,472.88 × 216,061.92
4. Step 4: Simplify right side
   377,154.72x = 112,454,369,760.73
5. Step 5: Solve for x
   x = 112,454,369,760.73/377,154.72
6. Step 6: Final answer
   x = 298,165.09