Finding the Fourth Proportional to 69.38, 103.98 and 42.36

Step by Step Solution

1. Step 1: Write the proportion equation
   69.38 : 103.98 = 42.36 : x
2. Step 2: Convert to fraction form
   69.38/103.98 = 42.36/x
3. Step 3: Cross multiply
   69.38x = 103.98 × 42.36
4. Step 4: Simplify right side
   69.38x = 4,404.59
5. Step 5: Solve for x
   x = 4,404.59/69.38
6. Step 6: Final answer
   x = 63.49