Finding the Fourth Proportional to 543,499.71, 811,589.63 and 443,857.56

Step by Step Solution

1. Step 1: Write the proportion equation
   543,499.71 : 811,589.63 = 443,857.56 : x
2. Step 2: Convert to fraction form
   543,499.71/811,589.63 = 443,857.56/x
3. Step 3: Cross multiply
   543,499.71x = 811,589.63 × 443,857.56
4. Step 4: Simplify right side
   543,499.71x = 360,230,190,673.82
5. Step 5: Solve for x
   x = 360,230,190,673.82/543,499.71
6. Step 6: Final answer
   x = 662,797.39