Finding the Fourth Proportional to 67.83, 93.77 and 61.83

Step by Step Solution

1. Step 1: Write the proportion equation
   67.83 : 93.77 = 61.83 : x
2. Step 2: Convert to fraction form
   67.83/93.77 = 61.83/x
3. Step 3: Cross multiply
   67.83x = 93.77 × 61.83
4. Step 4: Simplify right side
   67.83x = 5,797.49
5. Step 5: Solve for x
   x = 5,797.49/67.83
6. Step 6: Final answer
   x = 85.47