Finding the Fourth Proportional to 89.54, 134.38 and 59.10

Step by Step Solution

1. Step 1: Write the proportion equation
   89.54 : 134.38 = 59.10 : x
2. Step 2: Convert to fraction form
   89.54/134.38 = 59.10/x
3. Step 3: Cross multiply
   89.54x = 134.38 × 59.10
4. Step 4: Simplify right side
   89.54x = 7,941.86
5. Step 5: Solve for x
   x = 7,941.86/89.54
6. Step 6: Final answer
   x = 88.70