Finding the Fourth Proportional to 31,142.92, 42,977.46 and 16,995.88

Step by Step Solution

1. Step 1: Write the proportion equation
   31,142.92 : 42,977.46 = 16,995.88 : x
2. Step 2: Convert to fraction form
   31,142.92/42,977.46 = 16,995.88/x
3. Step 3: Cross multiply
   31,142.92x = 42,977.46 × 16,995.88
4. Step 4: Simplify right side
   31,142.92x = 730,439,752.86
5. Step 5: Solve for x
   x = 730,439,752.86/31,142.92
6. Step 6: Final answer
   x = 23,454.44