Finding the Fourth Proportional to 69.52, 104.20 and 42.48

Step by Step Solution

1. Step 1: Write the proportion equation
   69.52 : 104.20 = 42.48 : x
2. Step 2: Convert to fraction form
   69.52/104.20 = 42.48/x
3. Step 3: Cross multiply
   69.52x = 104.20 × 42.48
4. Step 4: Simplify right side
   69.52x = 4,426.42
5. Step 5: Solve for x
   x = 4,426.42/69.52
6. Step 6: Final answer
   x = 63.67