Finding the Fourth Proportional to 111.79, 154.27 and 62.67

Step by Step Solution

1. Step 1: Write the proportion equation
   111.79 : 154.27 = 62.67 : x
2. Step 2: Convert to fraction form
   111.79/154.27 = 62.67/x
3. Step 3: Cross multiply
   111.79x = 154.27 × 62.67
4. Step 4: Simplify right side
   111.79x = 9,667.72
5. Step 5: Solve for x
   x = 9,667.72/111.79
6. Step 6: Final answer
   x = 86.48