Finding the Fourth Proportional to 31,087.98, 42,724.62 and 29,119.68

Step by Step Solution

1. Step 1: Write the proportion equation
   31,087.98 : 42,724.62 = 29,119.68 : x
2. Step 2: Convert to fraction form
   31,087.98/42,724.62 = 29,119.68/x
3. Step 3: Cross multiply
   31,087.98x = 42,724.62 × 29,119.68
4. Step 4: Simplify right side
   31,087.98x = 1,244,127,262.52
5. Step 5: Solve for x
   x = 1,244,127,262.52/31,087.98
6. Step 6: Final answer
   x = 40,019.56