Finding the Fourth Proportional to 143,139.10, 200,132.30 and 143,139.10

Step by Step Solution

1. Step 1: Write the proportion equation
   143,139.10 : 200,132.30 = 143,139.10 : x
2. Step 2: Convert to fraction form
   143,139.10/200,132.30 = 143,139.10/x
3. Step 3: Cross multiply
   143,139.10x = 200,132.30 × 143,139.10
4. Step 4: Simplify right side
   143,139.10x = 28,646,757,302.93
5. Step 5: Solve for x
   x = 28,646,757,302.93/143,139.10
6. Step 6: Final answer
   x = 200,132.30