Finding the Fourth Proportional to 31,148.01, 42,982.65 and 16,998.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,148.01 : 42,982.65 = 16,998.12 : x
2. Step 2: Convert to fraction form
   31,148.01/42,982.65 = 16,998.12/x
3. Step 3: Cross multiply
   31,148.01x = 42,982.65 × 16,998.12
4. Step 4: Simplify right side
   31,148.01x = 730,624,242.62
5. Step 5: Solve for x
   x = 730,624,242.62/31,148.01
6. Step 6: Final answer
   x = 23,456.53