Finding the Fourth Proportional to 67.55, 101.15 and 57.98

Step by Step Solution

1. Step 1: Write the proportion equation
   67.55 : 101.15 = 57.98 : x
2. Step 2: Convert to fraction form
   67.55/101.15 = 57.98/x
3. Step 3: Cross multiply
   67.55x = 101.15 × 57.98
4. Step 4: Simplify right side
   67.55x = 5,864.43
5. Step 5: Solve for x
   x = 5,864.43/67.55
6. Step 6: Final answer
   x = 86.82