Finding the Fourth Proportional to 31,059.34, 42,860.43 and 16,912.14

Step by Step Solution

1. Step 1: Write the proportion equation
   31,059.34 : 42,860.43 = 16,912.14 : x
2. Step 2: Convert to fraction form
   31,059.34/42,860.43 = 16,912.14/x
3. Step 3: Cross multiply
   31,059.34x = 42,860.43 × 16,912.14
4. Step 4: Simplify right side
   31,059.34x = 724,861,592.62
5. Step 5: Solve for x
   x = 724,861,592.62/31,059.34
6. Step 6: Final answer
   x = 23,337.96