Finding the Fourth Proportional to 31,039.20, 42,834.42 and 16,892.01

Step by Step Solution

1. Step 1: Write the proportion equation
   31,039.20 : 42,834.42 = 16,892.01 : x
2. Step 2: Convert to fraction form
   31,039.20/42,834.42 = 16,892.01/x
3. Step 3: Cross multiply
   31,039.20x = 42,834.42 × 16,892.01
4. Step 4: Simplify right side
   31,039.20x = 723,559,450.98
5. Step 5: Solve for x
   x = 723,559,450.98/31,039.20
6. Step 6: Final answer
   x = 23,311.15