Finding the Fourth Proportional to 89.57, 123.69 and 58.52

Step by Step Solution

1. Step 1: Write the proportion equation
   89.57 : 123.69 = 58.52 : x
2. Step 2: Convert to fraction form
   89.57/123.69 = 58.52/x
3. Step 3: Cross multiply
   89.57x = 123.69 × 58.52
4. Step 4: Simplify right side
   89.57x = 7,238.87
5. Step 5: Solve for x
   x = 7,238.87/89.57
6. Step 6: Final answer
   x = 80.82