Finding the Fourth Proportional to 42,535.92, 58,719.69 and 28,398.18

Step by Step Solution

1. Step 1: Write the proportion equation
   42,535.92 : 58,719.69 = 28,398.18 : x
2. Step 2: Convert to fraction form
   42,535.92/58,719.69 = 28,398.18/x
3. Step 3: Cross multiply
   42,535.92x = 58,719.69 × 28,398.18
4. Step 4: Simplify right side
   42,535.92x = 1,667,532,326.16
5. Step 5: Solve for x
   x = 1,667,532,326.16/42,535.92
6. Step 6: Final answer
   x = 39,202.92