Finding the Fourth Proportional to 308,406.72, 425,718.72 and 201,002.88

Step by Step Solution

1. Step 1: Write the proportion equation
   308,406.72 : 425,718.72 = 201,002.88 : x
2. Step 2: Convert to fraction form
   308,406.72/425,718.72 = 201,002.88/x
3. Step 3: Cross multiply
   308,406.72x = 425,718.72 × 201,002.88
4. Step 4: Simplify right side
   308,406.72x = 85,570,688,789.91
5. Step 5: Solve for x
   x = 85,570,688,789.91/308,406.72
6. Step 6: Final answer
   x = 277,460.52