Finding the Fourth Proportional to 67.50, 101.17 and 43.12

Step by Step Solution

1. Step 1: Write the proportion equation
   67.50 : 101.17 = 43.12 : x
2. Step 2: Convert to fraction form
   67.50/101.17 = 43.12/x
3. Step 3: Cross multiply
   67.50x = 101.17 × 43.12
4. Step 4: Simplify right side
   67.50x = 4,362.45
5. Step 5: Solve for x
   x = 4,362.45/67.50
6. Step 6: Final answer
   x = 64.63