Finding the Fourth Proportional to 42.38, 63.06 and 42.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42.38 : 63.06 = 42.28 : x
2. Step 2: Convert to fraction form
   42.38/63.06 = 42.28/x
3. Step 3: Cross multiply
   42.38x = 63.06 × 42.28
4. Step 4: Simplify right side
   42.38x = 2,665.86
5. Step 5: Solve for x
   x = 2,665.86/42.38
6. Step 6: Final answer
   x = 62.91