Finding the Fourth Proportional to 83.69, 125.46 and 43.06

Step by Step Solution

1. Step 1: Write the proportion equation
   83.69 : 125.46 = 43.06 : x
2. Step 2: Convert to fraction form
   83.69/125.46 = 43.06/x
3. Step 3: Cross multiply
   83.69x = 125.46 × 43.06
4. Step 4: Simplify right side
   83.69x = 5,402.30
5. Step 5: Solve for x
   x = 5,402.30/83.69
6. Step 6: Final answer
   x = 64.55