Finding the Fourth Proportional to 42,142.28, 58,156.56 and 23,021.48

Step by Step Solution

1. Step 1: Write the proportion equation
   42,142.28 : 58,156.56 = 23,021.48 : x
2. Step 2: Convert to fraction form
   42,142.28/58,156.56 = 23,021.48/x
3. Step 3: Cross multiply
   42,142.28x = 58,156.56 × 23,021.48
4. Step 4: Simplify right side
   42,142.28x = 1,338,850,082.91
5. Step 5: Solve for x
   x = 1,338,850,082.91/42,142.28
6. Step 6: Final answer
   x = 31,769.76