Finding the Fourth Proportional to 69.16, 103.58 and 42.06

Step by Step Solution

1. Step 1: Write the proportion equation
   69.16 : 103.58 = 42.06 : x
2. Step 2: Convert to fraction form
   69.16/103.58 = 42.06/x
3. Step 3: Cross multiply
   69.16x = 103.58 × 42.06
4. Step 4: Simplify right side
   69.16x = 4,356.33
5. Step 5: Solve for x
   x = 4,356.33/69.16
6. Step 6: Final answer
   x = 62.99