Finding the Fourth Proportional to 105.07, 144.96 and 83.29

Step by Step Solution

1. Step 1: Write the proportion equation
   105.07 : 144.96 = 83.29 : x
2. Step 2: Convert to fraction form
   105.07/144.96 = 83.29/x
3. Step 3: Cross multiply
   105.07x = 144.96 × 83.29
4. Step 4: Simplify right side
   105.07x = 12,073.72
5. Step 5: Solve for x
   x = 12,073.72/105.07
6. Step 6: Final answer
   x = 114.91