Finding the Fourth Proportional to 67.52, 100.79 and 57.83

Step by Step Solution

1. Step 1: Write the proportion equation
   67.52 : 100.79 = 57.83 : x
2. Step 2: Convert to fraction form
   67.52/100.79 = 57.83/x
3. Step 3: Cross multiply
   67.52x = 100.79 × 57.83
4. Step 4: Simplify right side
   67.52x = 5,827.89
5. Step 5: Solve for x
   x = 5,827.89/67.52
6. Step 6: Final answer
   x = 86.32