Finding the Fourth Proportional to 31,046.76, 42,842.79 and 16,898.76

Step by Step Solution

1. Step 1: Write the proportion equation
   31,046.76 : 42,842.79 = 16,898.76 : x
2. Step 2: Convert to fraction form
   31,046.76/42,842.79 = 16,898.76/x
3. Step 3: Cross multiply
   31,046.76x = 42,842.79 × 16,898.76
4. Step 4: Simplify right side
   31,046.76x = 723,990,025.94
5. Step 5: Solve for x
   x = 723,990,025.94/31,046.76
6. Step 6: Final answer
   x = 23,319.34