Finding the Fourth Proportional to 89.22, 123.18 and 67.49

Step by Step Solution

1. Step 1: Write the proportion equation
   89.22 : 123.18 = 67.49 : x
2. Step 2: Convert to fraction form
   89.22/123.18 = 67.49/x
3. Step 3: Cross multiply
   89.22x = 123.18 × 67.49
4. Step 4: Simplify right side
   89.22x = 8,313.42
5. Step 5: Solve for x
   x = 8,313.42/89.22
6. Step 6: Final answer
   x = 93.18