Finding the Fourth Proportional to 456,504.93, 684,196.54 and 256,404.69

Step by Step Solution

1. Step 1: Write the proportion equation
   456,504.93 : 684,196.54 = 256,404.69 : x
2. Step 2: Convert to fraction form
   456,504.93/684,196.54 = 256,404.69/x
3. Step 3: Cross multiply
   456,504.93x = 684,196.54 × 256,404.69
4. Step 4: Simplify right side
   456,504.93x = 175,431,201,096.76
5. Step 5: Solve for x
   x = 175,431,201,096.76/456,504.93
6. Step 6: Final answer
   x = 384,292.02