Finding the Fourth Proportional to 89.82, 123.87 and 58.73

Step by Step Solution

1. Step 1: Write the proportion equation
   89.82 : 123.87 = 58.73 : x
2. Step 2: Convert to fraction form
   89.82/123.87 = 58.73/x
3. Step 3: Cross multiply
   89.82x = 123.87 × 58.73
4. Step 4: Simplify right side
   89.82x = 7,274.27
5. Step 5: Solve for x
   x = 7,274.27/89.82
6. Step 6: Final answer
   x = 80.99