Finding the Fourth Proportional to 31,123.11, 42,950.48 and 16,976.46

Step by Step Solution

1. Step 1: Write the proportion equation
   31,123.11 : 42,950.48 = 16,976.46 : x
2. Step 2: Convert to fraction form
   31,123.11/42,950.48 = 16,976.46/x
3. Step 3: Cross multiply
   31,123.11x = 42,950.48 × 16,976.46
4. Step 4: Simplify right side
   31,123.11x = 729,147,020.82
5. Step 5: Solve for x
   x = 729,147,020.82/31,123.11
6. Step 6: Final answer
   x = 23,427.83