Finding the Fourth Proportional to 143,556.82, 198,119.86 and 83,128.52

Step by Step Solution

1. Step 1: Write the proportion equation
   143,556.82 : 198,119.86 = 83,128.52 : x
2. Step 2: Convert to fraction form
   143,556.82/198,119.86 = 83,128.52/x
3. Step 3: Cross multiply
   143,556.82x = 198,119.86 × 83,128.52
4. Step 4: Simplify right side
   143,556.82x = 16,469,411,031.89
5. Step 5: Solve for x
   x = 16,469,411,031.89/143,556.82
6. Step 6: Final answer
   x = 114,723.99