Finding the Fourth Proportional to 31,129.54, 42,958.72 and 16,982.38

Step by Step Solution

1. Step 1: Write the proportion equation
   31,129.54 : 42,958.72 = 16,982.38 : x
2. Step 2: Convert to fraction form
   31,129.54/42,958.72 = 16,982.38/x
3. Step 3: Cross multiply
   31,129.54x = 42,958.72 × 16,982.38
4. Step 4: Simplify right side
   31,129.54x = 729,541,307.35
5. Step 5: Solve for x
   x = 729,541,307.35/31,129.54
6. Step 6: Final answer
   x = 23,435.66