Finding the Fourth Proportional to 495,960.57, 684,433.50 and 281,096.02

Step by Step Solution

1. Step 1: Write the proportion equation
   495,960.57 : 684,433.50 = 281,096.02 : x
2. Step 2: Convert to fraction form
   495,960.57/684,433.50 = 281,096.02/x
3. Step 3: Cross multiply
   495,960.57x = 684,433.50 × 281,096.02
4. Step 4: Simplify right side
   495,960.57x = 192,391,532,606.10
5. Step 5: Solve for x
   x = 192,391,532,606.10/495,960.57
6. Step 6: Final answer
   x = 387,916.99