Finding the Fourth Proportional to 42,021.61, 57,989.82 and 23,158.73

Step by Step Solution

1. Step 1: Write the proportion equation
   42,021.61 : 57,989.82 = 23,158.73 : x
2. Step 2: Convert to fraction form
   42,021.61/57,989.82 = 23,158.73/x
3. Step 3: Cross multiply
   42,021.61x = 57,989.82 × 23,158.73
4. Step 4: Simplify right side
   42,021.61x = 1,342,970,685.68
5. Step 5: Solve for x
   x = 1,342,970,685.68/42,021.61
6. Step 6: Final answer
   x = 31,959.05