Finding the Fourth Proportional to 789,066.48, 1,087,632.24 and 616,680

Step by Step Solution

1. Step 1: Write the proportion equation
   789,066.48 : 1,087,632.24 = 616,680 : x
2. Step 2: Convert to fraction form
   789,066.48/1,087,632.24 = 616,680/x
3. Step 3: Cross multiply
   789,066.48x = 1,087,632.24 × 616,680
4. Step 4: Simplify right side
   789,066.48x = 670,721,049,763.20
5. Step 5: Solve for x
   x = 670,721,049,763.20/789,066.48
6. Step 6: Final answer
   x = 850,018.43