Finding the Fourth Proportional to 31,123.49, 42,950.99 and 16,976.84

Step by Step Solution

1. Step 1: Write the proportion equation
   31,123.49 : 42,950.99 = 16,976.84 : x
2. Step 2: Convert to fraction form
   31,123.49/42,950.99 = 16,976.84/x
3. Step 3: Cross multiply
   31,123.49x = 42,950.99 × 16,976.84
4. Step 4: Simplify right side
   31,123.49x = 729,171,912.76
5. Step 5: Solve for x
   x = 729,171,912.76/31,123.49
6. Step 6: Final answer
   x = 23,428.35