Finding the Fourth Proportional to 69.42, 104.08 and 42.38

Step by Step Solution

1. Step 1: Write the proportion equation
   69.42 : 104.08 = 42.38 : x
2. Step 2: Convert to fraction form
   69.42/104.08 = 42.38/x
3. Step 3: Cross multiply
   69.42x = 104.08 × 42.38
4. Step 4: Simplify right side
   69.42x = 4,410.91
5. Step 5: Solve for x
   x = 4,410.91/69.42
6. Step 6: Final answer
   x = 63.54