Finding the Fourth Proportional to 106.29, 146.61 and 69.39

Step by Step Solution

1. Step 1: Write the proportion equation
   106.29 : 146.61 = 69.39 : x
2. Step 2: Convert to fraction form
   106.29/146.61 = 69.39/x
3. Step 3: Cross multiply
   106.29x = 146.61 × 69.39
4. Step 4: Simplify right side
   106.29x = 10,173.27
5. Step 5: Solve for x
   x = 10,173.27/106.29
6. Step 6: Final answer
   x = 95.71