Finding the Fourth Proportional to 485,158.71, 727,878.38 and 200,796.69

Step by Step Solution

1. Step 1: Write the proportion equation
   485,158.71 : 727,878.38 = 200,796.69 : x
2. Step 2: Convert to fraction form
   485,158.71/727,878.38 = 200,796.69/x
3. Step 3: Cross multiply
   485,158.71x = 727,878.38 × 200,796.69
4. Step 4: Simplify right side
   485,158.71x = 146,155,568,422.58
5. Step 5: Solve for x
   x = 146,155,568,422.58/485,158.71
6. Step 6: Final answer
   x = 301,253.11