Finding the Fourth Proportional to 31,040.28, 42,760.32 and 23,068.68

Step by Step Solution

1. Step 1: Write the proportion equation
   31,040.28 : 42,760.32 = 23,068.68 : x
2. Step 2: Convert to fraction form
   31,040.28/42,760.32 = 23,068.68/x
3. Step 3: Cross multiply
   31,040.28x = 42,760.32 × 23,068.68
4. Step 4: Simplify right side
   31,040.28x = 986,424,138.78
5. Step 5: Solve for x
   x = 986,424,138.78/31,040.28
6. Step 6: Final answer
   x = 31,778.84