Finding the Fourth Proportional to 42,011.43, 58,022.42 and 28,559.36

Step by Step Solution

1. Step 1: Write the proportion equation
   42,011.43 : 58,022.42 = 28,559.36 : x
2. Step 2: Convert to fraction form
   42,011.43/58,022.42 = 28,559.36/x
3. Step 3: Cross multiply
   42,011.43x = 58,022.42 × 28,559.36
4. Step 4: Simplify right side
   42,011.43x = 1,657,082,747.94
5. Step 5: Solve for x
   x = 1,657,082,747.94/42,011.43
6. Step 6: Final answer
   x = 39,443.62