Finding the Fourth Proportional to 67.19, 100.61 and 56.33

Step by Step Solution

1. Step 1: Write the proportion equation
   67.19 : 100.61 = 56.33 : x
2. Step 2: Convert to fraction form
   67.19/100.61 = 56.33/x
3. Step 3: Cross multiply
   67.19x = 100.61 × 56.33
4. Step 4: Simplify right side
   67.19x = 5,666.86
5. Step 5: Solve for x
   x = 5,666.86/67.19
6. Step 6: Final answer
   x = 84.35