Finding the Fourth Proportional to 42,535.42, 58,719 and 28,397.68

Step by Step Solution

1. Step 1: Write the proportion equation
   42,535.42 : 58,719 = 28,397.68 : x
2. Step 2: Convert to fraction form
   42,535.42/58,719 = 28,397.68/x
3. Step 3: Cross multiply
   42,535.42x = 58,719 × 28,397.68
4. Step 4: Simplify right side
   42,535.42x = 1,667,483,371.92
5. Step 5: Solve for x
   x = 1,667,483,371.92/42,535.42
6. Step 6: Final answer
   x = 39,202.23