Finding the Fourth Proportional to 281,139.02, 387,568.32 and 200,426.42

Step by Step Solution

1. Step 1: Write the proportion equation
   281,139.02 : 387,568.32 = 200,426.42 : x
2. Step 2: Convert to fraction form
   281,139.02/387,568.32 = 200,426.42/x
3. Step 3: Cross multiply
   281,139.02x = 387,568.32 × 200,426.42
4. Step 4: Simplify right side
   281,139.02x = 77,678,930,883.01
5. Step 5: Solve for x
   x = 77,678,930,883.01/281,139.02
6. Step 6: Final answer
   x = 276,300.78