Finding the Fourth Proportional to 105.96, 146.03 and 89.33

Step by Step Solution

1. Step 1: Write the proportion equation
   105.96 : 146.03 = 89.33 : x
2. Step 2: Convert to fraction form
   105.96/146.03 = 89.33/x
3. Step 3: Cross multiply
   105.96x = 146.03 × 89.33
4. Step 4: Simplify right side
   105.96x = 13,045.45
5. Step 5: Solve for x
   x = 13,045.45/105.96
6. Step 6: Final answer
   x = 123.12