Finding the Fourth Proportional to 469,314.24, 647,483.76 and 308,256.72

Step by Step Solution

1. Step 1: Write the proportion equation
   469,314.24 : 647,483.76 = 308,256.72 : x
2. Step 2: Convert to fraction form
   469,314.24/647,483.76 = 308,256.72/x
3. Step 3: Cross multiply
   469,314.24x = 647,483.76 × 308,256.72
4. Step 4: Simplify right side
   469,314.24x = 199,591,220,110.87
5. Step 5: Solve for x
   x = 199,591,220,110.87/469,314.24
6. Step 6: Final answer
   x = 425,282.69