Finding the Fourth Proportional to 467,947, 645,767.22 and 253,086.79

Step by Step Solution

1. Step 1: Write the proportion equation
   467,947 : 645,767.22 = 253,086.79 : x
2. Step 2: Convert to fraction form
   467,947/645,767.22 = 253,086.79/x
3. Step 3: Cross multiply
   467,947x = 645,767.22 × 253,086.79
4. Step 4: Simplify right side
   467,947x = 163,435,152,797.02
5. Step 5: Solve for x
   x = 163,435,152,797.02/467,947
6. Step 6: Final answer
   x = 349,259.96