Finding the Fourth Proportional to 83.59, 125.22 and 42.94

Step by Step Solution

1. Step 1: Write the proportion equation
   83.59 : 125.22 = 42.94 : x
2. Step 2: Convert to fraction form
   83.59/125.22 = 42.94/x
3. Step 3: Cross multiply
   83.59x = 125.22 × 42.94
4. Step 4: Simplify right side
   83.59x = 5,376.42
5. Step 5: Solve for x
   x = 5,376.42/83.59
6. Step 6: Final answer
   x = 64.32