Finding the Fourth Proportional to 31,114.16, 42,936.72 and 16,967.28

Step by Step Solution

1. Step 1: Write the proportion equation
   31,114.16 : 42,936.72 = 16,967.28 : x
2. Step 2: Convert to fraction form
   31,114.16/42,936.72 = 16,967.28/x
3. Step 3: Cross multiply
   31,114.16x = 42,936.72 × 16,967.28
4. Step 4: Simplify right side
   31,114.16x = 728,519,350.52
5. Step 5: Solve for x
   x = 728,519,350.52/31,114.16
6. Step 6: Final answer
   x = 23,414.40