Finding the Fourth Proportional to 143,558.27, 198,093.25 and 83,120.69

Step by Step Solution

1. Step 1: Write the proportion equation
   143,558.27 : 198,093.25 = 83,120.69 : x
2. Step 2: Convert to fraction form
   143,558.27/198,093.25 = 83,120.69/x
3. Step 3: Cross multiply
   143,558.27x = 198,093.25 × 83,120.69
4. Step 4: Simplify right side
   143,558.27x = 16,465,648,297.49
5. Step 5: Solve for x
   x = 16,465,648,297.49/143,558.27
6. Step 6: Final answer
   x = 114,696.62