Finding the Fourth Proportional to 89.13, 123.15 and 67.47

Step by Step Solution

1. Step 1: Write the proportion equation
   89.13 : 123.15 = 67.47 : x
2. Step 2: Convert to fraction form
   89.13/123.15 = 67.47/x
3. Step 3: Cross multiply
   89.13x = 123.15 × 67.47
4. Step 4: Simplify right side
   89.13x = 8,308.93
5. Step 5: Solve for x
   x = 8,308.93/89.13
6. Step 6: Final answer
   x = 93.22