Finding the Fourth Proportional to 89.34, 123.18 and 67.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89.34 : 123.18 = 67.50 : x
2. Step 2: Convert to fraction form
   89.34/123.18 = 67.50/x
3. Step 3: Cross multiply
   89.34x = 123.18 × 67.50
4. Step 4: Simplify right side
   89.34x = 8,314.65
5. Step 5: Solve for x
   x = 8,314.65/89.34
6. Step 6: Final answer
   x = 93.07