Finding the Fourth Proportional to 72,423.92, 99,916.12 and 42,204.72

Step by Step Solution

1. Step 1: Write the proportion equation
   72,423.92 : 99,916.12 = 42,204.72 : x
2. Step 2: Convert to fraction form
   72,423.92/99,916.12 = 42,204.72/x
3. Step 3: Cross multiply
   72,423.92x = 99,916.12 × 42,204.72
4. Step 4: Simplify right side
   72,423.92x = 4,216,931,868.09
5. Step 5: Solve for x
   x = 4,216,931,868.09/72,423.92
6. Step 6: Final answer
   x = 58,225.68