Finding the Fourth Proportional to 31,131.24, 42,961.08 and 16,984.08

Step by Step Solution

1. Step 1: Write the proportion equation
   31,131.24 : 42,961.08 = 16,984.08 : x
2. Step 2: Convert to fraction form
   31,131.24/42,961.08 = 16,984.08/x
3. Step 3: Cross multiply
   31,131.24x = 42,961.08 × 16,984.08
4. Step 4: Simplify right side
   31,131.24x = 729,654,419.61
5. Step 5: Solve for x
   x = 729,654,419.61/31,131.24
6. Step 6: Final answer
   x = 23,438.01