Finding the Fourth Proportional to 31,105.16, 42,925.56 and 16,958.24

Step by Step Solution

1. Step 1: Write the proportion equation
   31,105.16 : 42,925.56 = 16,958.24 : x
2. Step 2: Convert to fraction form
   31,105.16/42,925.56 = 16,958.24/x
3. Step 3: Cross multiply
   31,105.16x = 42,925.56 × 16,958.24
4. Step 4: Simplify right side
   31,105.16x = 727,941,948.61
5. Step 5: Solve for x
   x = 727,941,948.61/31,105.16
6. Step 6: Final answer
   x = 23,402.61