Finding the Fourth Proportional to 715,745, 1,073,623.98 and 217,109

Step by Step Solution

1. Step 1: Write the proportion equation
   715,745 : 1,073,623.98 = 217,109 : x
2. Step 2: Convert to fraction form
   715,745/1,073,623.98 = 217,109/x
3. Step 3: Cross multiply
   715,745x = 1,073,623.98 × 217,109
4. Step 4: Simplify right side
   715,745x = 233,093,428,673.82
5. Step 5: Solve for x
   x = 233,093,428,673.82/715,745
6. Step 6: Final answer
   x = 325,665.47