Finding the Fourth Proportional to 102.98, 142.04 and 73.82

Step by Step Solution

1. Step 1: Write the proportion equation
   102.98 : 142.04 = 73.82 : x
2. Step 2: Convert to fraction form
   102.98/142.04 = 73.82/x
3. Step 3: Cross multiply
   102.98x = 142.04 × 73.82
4. Step 4: Simplify right side
   102.98x = 10,485.39
5. Step 5: Solve for x
   x = 10,485.39/102.98
6. Step 6: Final answer
   x = 101.82