Finding the Fourth Proportional to 111.22, 153.52 and 67.58

Step by Step Solution

1. Step 1: Write the proportion equation
   111.22 : 153.52 = 67.58 : x
2. Step 2: Convert to fraction form
   111.22/153.52 = 67.58/x
3. Step 3: Cross multiply
   111.22x = 153.52 × 67.58
4. Step 4: Simplify right side
   111.22x = 10,374.88
5. Step 5: Solve for x
   x = 10,374.88/111.22
6. Step 6: Final answer
   x = 93.28