Finding the Fourth Proportional to 463,109.28, 639,117.72 and 259,158.48

Step by Step Solution

1. Step 1: Write the proportion equation
   463,109.28 : 639,117.72 = 259,158.48 : x
2. Step 2: Convert to fraction form
   463,109.28/639,117.72 = 259,158.48/x
3. Step 3: Cross multiply
   463,109.28x = 639,117.72 × 259,158.48
4. Step 4: Simplify right side
   463,109.28x = 165,632,776,856.27
5. Step 5: Solve for x
   x = 165,632,776,856.27/463,109.28
6. Step 6: Final answer
   x = 357,653.76