Finding the Fourth Proportional to 111.83, 154.32 and 62.69

Step by Step Solution

1. Step 1: Write the proportion equation
   111.83 : 154.32 = 62.69 : x
2. Step 2: Convert to fraction form
   111.83/154.32 = 62.69/x
3. Step 3: Cross multiply
   111.83x = 154.32 × 62.69
4. Step 4: Simplify right side
   111.83x = 9,674.53
5. Step 5: Solve for x
   x = 9,674.53/111.83
6. Step 6: Final answer
   x = 86.51