Finding the Fourth Proportional to 456,020.72, 629,295.72 and 254,816.72

Step by Step Solution

1. Step 1: Write the proportion equation
   456,020.72 : 629,295.72 = 254,816.72 : x
2. Step 2: Convert to fraction form
   456,020.72/629,295.72 = 254,816.72/x
3. Step 3: Cross multiply
   456,020.72x = 629,295.72 × 254,816.72
4. Step 4: Simplify right side
   456,020.72x = 160,355,071,280.44
5. Step 5: Solve for x
   x = 160,355,071,280.44/456,020.72
6. Step 6: Final answer
   x = 351,639.88