Finding the Fourth Proportional to 83.67, 125.47 and 43.05

Step by Step Solution

1. Step 1: Write the proportion equation
   83.67 : 125.47 = 43.05 : x
2. Step 2: Convert to fraction form
   83.67/125.47 = 43.05/x
3. Step 3: Cross multiply
   83.67x = 125.47 × 43.05
4. Step 4: Simplify right side
   83.67x = 5,401.48
5. Step 5: Solve for x
   x = 5,401.48/83.67
6. Step 6: Final answer
   x = 64.56