Finding the Fourth Proportional to 111.93, 154.46 and 62.82

Step by Step Solution

1. Step 1: Write the proportion equation
   111.93 : 154.46 = 62.82 : x
2. Step 2: Convert to fraction form
   111.93/154.46 = 62.82/x
3. Step 3: Cross multiply
   111.93x = 154.46 × 62.82
4. Step 4: Simplify right side
   111.93x = 9,702.86
5. Step 5: Solve for x
   x = 9,702.86/111.93
6. Step 6: Final answer
   x = 86.69