Finding the Fourth Proportional to 104.82, 144.83 and 86.38

Step by Step Solution

1. Step 1: Write the proportion equation
   104.82 : 144.83 = 86.38 : x
2. Step 2: Convert to fraction form
   104.82/144.83 = 86.38/x
3. Step 3: Cross multiply
   104.82x = 144.83 × 86.38
4. Step 4: Simplify right side
   104.82x = 12,510.42
5. Step 5: Solve for x
   x = 12,510.42/104.82
6. Step 6: Final answer
   x = 119.35