Finding the Fourth Proportional to 67.82, 93.36 and 61.82

Step by Step Solution

1. Step 1: Write the proportion equation
   67.82 : 93.36 = 61.82 : x
2. Step 2: Convert to fraction form
   67.82/93.36 = 61.82/x
3. Step 3: Cross multiply
   67.82x = 93.36 × 61.82
4. Step 4: Simplify right side
   67.82x = 5,771.52
5. Step 5: Solve for x
   x = 5,771.52/67.82
6. Step 6: Final answer
   x = 85.10