Finding the Fourth Proportional to 143,599.05, 198,185.31 and 82,369.17

Step by Step Solution

1. Step 1: Write the proportion equation
   143,599.05 : 198,185.31 = 82,369.17 : x
2. Step 2: Convert to fraction form
   143,599.05/198,185.31 = 82,369.17/x
3. Step 3: Cross multiply
   143,599.05x = 198,185.31 × 82,369.17
4. Step 4: Simplify right side
   143,599.05x = 16,324,359,490.89
5. Step 5: Solve for x
   x = 16,324,359,490.89/143,599.05
6. Step 6: Final answer
   x = 113,680.14