Finding the Fourth Proportional to 105.99, 146.22 and 69.17

Step by Step Solution

1. Step 1: Write the proportion equation
   105.99 : 146.22 = 69.17 : x
2. Step 2: Convert to fraction form
   105.99/146.22 = 69.17/x
3. Step 3: Cross multiply
   105.99x = 146.22 × 69.17
4. Step 4: Simplify right side
   105.99x = 10,113.31
5. Step 5: Solve for x
   x = 10,113.31/105.99
6. Step 6: Final answer
   x = 95.42