Finding the Fourth Proportional to 31,127.96, 42,956.22 and 16,980.92

Step by Step Solution

1. Step 1: Write the proportion equation
   31,127.96 : 42,956.22 = 16,980.92 : x
2. Step 2: Convert to fraction form
   31,127.96/42,956.22 = 16,980.92/x
3. Step 3: Cross multiply
   31,127.96x = 42,956.22 × 16,980.92
4. Step 4: Simplify right side
   31,127.96x = 729,436,135.32
5. Step 5: Solve for x
   x = 729,436,135.32/31,127.96
6. Step 6: Final answer
   x = 23,433.47