Finding the Fourth Proportional to 42.48, 63.25 and 42.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42.48 : 63.25 = 42.28 : x
2. Step 2: Convert to fraction form
   42.48/63.25 = 42.28/x
3. Step 3: Cross multiply
   42.48x = 63.25 × 42.28
4. Step 4: Simplify right side
   42.48x = 2,674.21
5. Step 5: Solve for x
   x = 2,674.21/42.48
6. Step 6: Final answer
   x = 62.95