Finding the Fourth Proportional to 67.42, 100.96 and 56.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67.42 : 100.96 = 56.50 : x
2. Step 2: Convert to fraction form
   67.42/100.96 = 56.50/x
3. Step 3: Cross multiply
   67.42x = 100.96 × 56.50
4. Step 4: Simplify right side
   67.42x = 5,704.24
5. Step 5: Solve for x
   x = 5,704.24/67.42
6. Step 6: Final answer
   x = 84.61