Finding the Fourth Proportional to 111.73, 154.15 and 62.59

Step by Step Solution

1. Step 1: Write the proportion equation
   111.73 : 154.15 = 62.59 : x
2. Step 2: Convert to fraction form
   111.73/154.15 = 62.59/x
3. Step 3: Cross multiply
   111.73x = 154.15 × 62.59
4. Step 4: Simplify right side
   111.73x = 9,648.25
5. Step 5: Solve for x
   x = 9,648.25/111.73
6. Step 6: Final answer
   x = 86.35