Finding the Fourth Proportional to 89.24, 123.12 and 67.42

Step by Step Solution

1. Step 1: Write the proportion equation
   89.24 : 123.12 = 67.42 : x
2. Step 2: Convert to fraction form
   89.24/123.12 = 67.42/x
3. Step 3: Cross multiply
   89.24x = 123.12 × 67.42
4. Step 4: Simplify right side
   89.24x = 8,300.75
5. Step 5: Solve for x
   x = 8,300.75/89.24
6. Step 6: Final answer
   x = 93.02