Finding the Fourth Proportional to 67.72, 93.42 and 43.15

Step by Step Solution

1. Step 1: Write the proportion equation
   67.72 : 93.42 = 43.15 : x
2. Step 2: Convert to fraction form
   67.72/93.42 = 43.15/x
3. Step 3: Cross multiply
   67.72x = 93.42 × 43.15
4. Step 4: Simplify right side
   67.72x = 4,030.84
5. Step 5: Solve for x
   x = 4,030.84/67.72
6. Step 6: Final answer
   x = 59.52