Finding the Fourth Proportional to 31,129.56, 42,958.89 and 16,982.37

Step by Step Solution

1. Step 1: Write the proportion equation
   31,129.56 : 42,958.89 = 16,982.37 : x
2. Step 2: Convert to fraction form
   31,129.56/42,958.89 = 16,982.37/x
3. Step 3: Cross multiply
   31,129.56x = 42,958.89 × 16,982.37
4. Step 4: Simplify right side
   31,129.56x = 729,543,764.77
5. Step 5: Solve for x
   x = 729,543,764.77/31,129.56
6. Step 6: Final answer
   x = 23,435.72