Finding the Fourth Proportional to 562,938.62, 776,662.52 and 321,047.31

Step by Step Solution

1. Step 1: Write the proportion equation
   562,938.62 : 776,662.52 = 321,047.31 : x
2. Step 2: Convert to fraction form
   562,938.62/776,662.52 = 321,047.31/x
3. Step 3: Cross multiply
   562,938.62x = 776,662.52 × 321,047.31
4. Step 4: Simplify right side
   562,938.62x = 249,345,411,218.59
5. Step 5: Solve for x
   x = 249,345,411,218.59/562,938.62
6. Step 6: Final answer
   x = 442,935.34