Finding the Fourth Proportional to 42,021.30, 57,988.89 and 23,158.02

Step by Step Solution

1. Step 1: Write the proportion equation
   42,021.30 : 57,988.89 = 23,158.02 : x
2. Step 2: Convert to fraction form
   42,021.30/57,988.89 = 23,158.02/x
3. Step 3: Cross multiply
   42,021.30x = 57,988.89 × 23,158.02
4. Step 4: Simplify right side
   42,021.30x = 1,342,907,874.40
5. Step 5: Solve for x
   x = 1,342,907,874.40/42,021.30
6. Step 6: Final answer
   x = 31,957.79