Finding the Fourth Proportional to 89.29, 123.23 and 54.34

Step by Step Solution

1. Step 1: Write the proportion equation
   89.29 : 123.23 = 54.34 : x
2. Step 2: Convert to fraction form
   89.29/123.23 = 54.34/x
3. Step 3: Cross multiply
   89.29x = 123.23 × 54.34
4. Step 4: Simplify right side
   89.29x = 6,696.32
5. Step 5: Solve for x
   x = 6,696.32/89.29
6. Step 6: Final answer
   x = 75.00