Finding the Fourth Proportional to 144.76, 199.72 and 86.52

Step by Step Solution

1. Step 1: Write the proportion equation
   144.76 : 199.72 = 86.52 : x
2. Step 2: Convert to fraction form
   144.76/199.72 = 86.52/x
3. Step 3: Cross multiply
   144.76x = 199.72 × 86.52
4. Step 4: Simplify right side
   144.76x = 17,279.77
5. Step 5: Solve for x
   x = 17,279.77/144.76
6. Step 6: Final answer
   x = 119.37