Finding the Fourth Proportional to 83.59, 125.18 and 59.15

Step by Step Solution

1. Step 1: Write the proportion equation
   83.59 : 125.18 = 59.15 : x
2. Step 2: Convert to fraction form
   83.59/125.18 = 59.15/x
3. Step 3: Cross multiply
   83.59x = 125.18 × 59.15
4. Step 4: Simplify right side
   83.59x = 7,404.64
5. Step 5: Solve for x
   x = 7,404.64/83.59
6. Step 6: Final answer
   x = 88.59