Finding the Fourth Proportional to 42,021.54, 57,989.52 and 23,158.71

Step by Step Solution

1. Step 1: Write the proportion equation
   42,021.54 : 57,989.52 = 23,158.71 : x
2. Step 2: Convert to fraction form
   42,021.54/57,989.52 = 23,158.71/x
3. Step 3: Cross multiply
   42,021.54x = 57,989.52 × 23,158.71
4. Step 4: Simplify right side
   42,021.54x = 1,342,962,476.72
5. Step 5: Solve for x
   x = 1,342,962,476.72/42,021.54
6. Step 6: Final answer
   x = 31,958.91