Finding the Fourth Proportional to 98.55, 147.61 and 67.98

Step by Step Solution

1. Step 1: Write the proportion equation
   98.55 : 147.61 = 67.98 : x
2. Step 2: Convert to fraction form
   98.55/147.61 = 67.98/x
3. Step 3: Cross multiply
   98.55x = 147.61 × 67.98
4. Step 4: Simplify right side
   98.55x = 10,034.53
5. Step 5: Solve for x
   x = 10,034.53/98.55
6. Step 6: Final answer
   x = 101.82