Finding the Fourth Proportional to 105.96, 158.78 and 94.42

Step by Step Solution

1. Step 1: Write the proportion equation
   105.96 : 158.78 = 94.42 : x
2. Step 2: Convert to fraction form
   105.96/158.78 = 94.42/x
3. Step 3: Cross multiply
   105.96x = 158.78 × 94.42
4. Step 4: Simplify right side
   105.96x = 14,992.01
5. Step 5: Solve for x
   x = 14,992.01/105.96
6. Step 6: Final answer
   x = 141.49