Finding the Fourth Proportional to 31,086.96, 42,900.02 and 16,939.82

Step by Step Solution

1. Step 1: Write the proportion equation
   31,086.96 : 42,900.02 = 16,939.82 : x
2. Step 2: Convert to fraction form
   31,086.96/42,900.02 = 16,939.82/x
3. Step 3: Cross multiply
   31,086.96x = 42,900.02 × 16,939.82
4. Step 4: Simplify right side
   31,086.96x = 726,718,317.60
5. Step 5: Solve for x
   x = 726,718,317.60/31,086.96
6. Step 6: Final answer
   x = 23,376.95