Finding the Fourth Proportional to 556,182.72, 834,482.56 and 256,806.72

Step by Step Solution

1. Step 1: Write the proportion equation
   556,182.72 : 834,482.56 = 256,806.72 : x
2. Step 2: Convert to fraction form
   556,182.72/834,482.56 = 256,806.72/x
3. Step 3: Cross multiply
   556,182.72x = 834,482.56 × 256,806.72
4. Step 4: Simplify right side
   556,182.72x = 214,300,729,130.80
5. Step 5: Solve for x
   x = 214,300,729,130.80/556,182.72
6. Step 6: Final answer
   x = 385,306.34