Finding the Fourth Proportional to 144.82, 199.89 and 86.62

Step by Step Solution

1. Step 1: Write the proportion equation
   144.82 : 199.89 = 86.62 : x
2. Step 2: Convert to fraction form
   144.82/199.89 = 86.62/x
3. Step 3: Cross multiply
   144.82x = 199.89 × 86.62
4. Step 4: Simplify right side
   144.82x = 17,314.47
5. Step 5: Solve for x
   x = 17,314.47/144.82
6. Step 6: Final answer
   x = 119.56