Finding the Fourth Proportional to 106.22, 146.52 and 69.42

Step by Step Solution

1. Step 1: Write the proportion equation
   106.22 : 146.52 = 69.42 : x
2. Step 2: Convert to fraction form
   106.22/146.52 = 69.42/x
3. Step 3: Cross multiply
   106.22x = 146.52 × 69.42
4. Step 4: Simplify right side
   106.22x = 10,171.42
5. Step 5: Solve for x
   x = 10,171.42/106.22
6. Step 6: Final answer
   x = 95.76