Finding the Fourth Proportional to 89.69, 134.31 and 59.21

Step by Step Solution

1. Step 1: Write the proportion equation
   89.69 : 134.31 = 59.21 : x
2. Step 2: Convert to fraction form
   89.69/134.31 = 59.21/x
3. Step 3: Cross multiply
   89.69x = 134.31 × 59.21
4. Step 4: Simplify right side
   89.69x = 7,952.83
5. Step 5: Solve for x
   x = 7,952.83/89.69
6. Step 6: Final answer
   x = 88.67