Finding the Fourth Proportional to 31,096.16, 42,913.23 and 16,949.78

Step by Step Solution

1. Step 1: Write the proportion equation
   31,096.16 : 42,913.23 = 16,949.78 : x
2. Step 2: Convert to fraction form
   31,096.16/42,913.23 = 16,949.78/x
3. Step 3: Cross multiply
   31,096.16x = 42,913.23 × 16,949.78
4. Step 4: Simplify right side
   31,096.16x = 727,369,807.59
5. Step 5: Solve for x
   x = 727,369,807.59/31,096.16
6. Step 6: Final answer
   x = 23,390.98