Finding the Fourth Proportional to 89.38, 123.06 and 67.42

Step by Step Solution

1. Step 1: Write the proportion equation
   89.38 : 123.06 = 67.42 : x
2. Step 2: Convert to fraction form
   89.38/123.06 = 67.42/x
3. Step 3: Cross multiply
   89.38x = 123.06 × 67.42
4. Step 4: Simplify right side
   89.38x = 8,296.71
5. Step 5: Solve for x
   x = 8,296.71/89.38
6. Step 6: Final answer
   x = 92.83