Finding the Fourth Proportional to 31,113.82, 42,936.14 and 17,686.54

Step by Step Solution

1. Step 1: Write the proportion equation
   31,113.82 : 42,936.14 = 17,686.54 : x
2. Step 2: Convert to fraction form
   31,113.82/42,936.14 = 17,686.54/x
3. Step 3: Cross multiply
   31,113.82x = 42,936.14 × 17,686.54
4. Step 4: Simplify right side
   31,113.82x = 759,391,757.56
5. Step 5: Solve for x
   x = 759,391,757.56/31,113.82
6. Step 6: Final answer
   x = 24,406.90