Finding the Fourth Proportional to 89.35, 123.35 and 67.61

Step by Step Solution

1. Step 1: Write the proportion equation
   89.35 : 123.35 = 67.61 : x
2. Step 2: Convert to fraction form
   89.35/123.35 = 67.61/x
3. Step 3: Cross multiply
   89.35x = 123.35 × 67.61
4. Step 4: Simplify right side
   89.35x = 8,339.69
5. Step 5: Solve for x
   x = 8,339.69/89.35
6. Step 6: Final answer
   x = 93.34