Finding the Fourth Proportional to 31,059.62, 42,862.44 and 16,912.82

Step by Step Solution

1. Step 1: Write the proportion equation
   31,059.62 : 42,862.44 = 16,912.82 : x
2. Step 2: Convert to fraction form
   31,059.62/42,862.44 = 16,912.82/x
3. Step 3: Cross multiply
   31,059.62x = 42,862.44 × 16,912.82
4. Step 4: Simplify right side
   31,059.62x = 724,924,732.48
5. Step 5: Solve for x
   x = 724,924,732.48/31,059.62
6. Step 6: Final answer
   x = 23,339.78