Finding the Fourth Proportional to 111.82, 167.77 and 69.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111.82 : 167.77 = 69.10 : x
2. Step 2: Convert to fraction form
   111.82/167.77 = 69.10/x
3. Step 3: Cross multiply
   111.82x = 167.77 × 69.10
4. Step 4: Simplify right side
   111.82x = 11,592.91
5. Step 5: Solve for x
   x = 11,592.91/111.82
6. Step 6: Final answer
   x = 103.67