Finding the Fourth Proportional to 315,426.42, 470,725.76 and 281,768.49

Step by Step Solution

1. Step 1: Write the proportion equation
   315,426.42 : 470,725.76 = 281,768.49 : x
2. Step 2: Convert to fraction form
   315,426.42/470,725.76 = 281,768.49/x
3. Step 3: Cross multiply
   315,426.42x = 470,725.76 × 281,768.49
4. Step 4: Simplify right side
   315,426.42x = 132,635,687,303.72
5. Step 5: Solve for x
   x = 132,635,687,303.72/315,426.42
6. Step 6: Final answer
   x = 420,496.44