Finding the Fourth Proportional to 949,456,100.72, 1,423,423,581.28 and 451,216,545.05

Step by Step Solution

1. Step 1: Write the proportion equation
   949,456,100.72 : 1,423,423,581.28 = 451,216,545.05 : x
2. Step 2: Convert to fraction form
   949,456,100.72/1,423,423,581.28 = 451,216,545.05/x
3. Step 3: Cross multiply
   949,456,100.72x = 1,423,423,581.28 × 451,216,545.05
4. Step 4: Simplify right side
   949,456,100.72x = 642,272,270,484,817,152
5. Step 5: Solve for x
   x = 642,272,270,484,817,152/949,456,100.72
6. Step 6: Final answer
   x = 676,463,366.76