Finding the Fourth Proportional to 563,696.94, 777,901.59 and 309,042.78

Step by Step Solution

1. Step 1: Write the proportion equation
   563,696.94 : 777,901.59 = 309,042.78 : x
2. Step 2: Convert to fraction form
   563,696.94/777,901.59 = 309,042.78/x
3. Step 3: Cross multiply
   563,696.94x = 777,901.59 × 309,042.78
4. Step 4: Simplify right side
   563,696.94x = 240,404,869,940.02
5. Step 5: Solve for x
   x = 240,404,869,940.02/563,696.94
6. Step 6: Final answer
   x = 426,478.93