Finding the Fourth Proportional to 31,129.35, 42,958.42 and 16,982.10

Step by Step Solution

1. Step 1: Write the proportion equation
   31,129.35 : 42,958.42 = 16,982.10 : x
2. Step 2: Convert to fraction form
   31,129.35/42,958.42 = 16,982.10/x
3. Step 3: Cross multiply
   31,129.35x = 42,958.42 × 16,982.10
4. Step 4: Simplify right side
   31,129.35x = 729,523,884.58
5. Step 5: Solve for x
   x = 729,523,884.58/31,129.35
6. Step 6: Final answer
   x = 23,435.24