Finding the Fourth Proportional to 42,389.12, 58,505.06 and 28,049.24

Step by Step Solution

1. Step 1: Write the proportion equation
   42,389.12 : 58,505.06 = 28,049.24 : x
2. Step 2: Convert to fraction form
   42,389.12/58,505.06 = 28,049.24/x
3. Step 3: Cross multiply
   42,389.12x = 58,505.06 × 28,049.24
4. Step 4: Simplify right side
   42,389.12x = 1,641,022,469.15
5. Step 5: Solve for x
   x = 1,641,022,469.15/42,389.12
6. Step 6: Final answer
   x = 38,713.29