Finding the Fourth Proportional to 31,039.58, 42,834.48 and 16,892.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,039.58 : 42,834.48 = 16,892.12 : x
2. Step 2: Convert to fraction form
   31,039.58/42,834.48 = 16,892.12/x
3. Step 3: Cross multiply
   31,039.58x = 42,834.48 × 16,892.12
4. Step 4: Simplify right side
   31,039.58x = 723,565,176.30
5. Step 5: Solve for x
   x = 723,565,176.30/31,039.58
6. Step 6: Final answer
   x = 23,311.05