Finding the Fourth Proportional to 67.61, 100.98 and 57.94

Step by Step Solution

1. Step 1: Write the proportion equation
   67.61 : 100.98 = 57.94 : x
2. Step 2: Convert to fraction form
   67.61/100.98 = 57.94/x
3. Step 3: Cross multiply
   67.61x = 100.98 × 57.94
4. Step 4: Simplify right side
   67.61x = 5,850.78
5. Step 5: Solve for x
   x = 5,850.78/67.61
6. Step 6: Final answer
   x = 86.54