Finding the Fourth Proportional to 67.59, 101.43 and 57.42

Step by Step Solution

1. Step 1: Write the proportion equation
   67.59 : 101.43 = 57.42 : x
2. Step 2: Convert to fraction form
   67.59/101.43 = 57.42/x
3. Step 3: Cross multiply
   67.59x = 101.43 × 57.42
4. Step 4: Simplify right side
   67.59x = 5,824.11
5. Step 5: Solve for x
   x = 5,824.11/67.59
6. Step 6: Final answer
   x = 86.17