Finding the Fourth Proportional to 86.52, 119.42 and 49.69

Step by Step Solution

1. Step 1: Write the proportion equation
   86.52 : 119.42 = 49.69 : x
2. Step 2: Convert to fraction form
   86.52/119.42 = 49.69/x
3. Step 3: Cross multiply
   86.52x = 119.42 × 49.69
4. Step 4: Simplify right side
   86.52x = 5,933.40
5. Step 5: Solve for x
   x = 5,933.40/86.52
6. Step 6: Final answer
   x = 68.58