Finding the Fourth Proportional to 787,151.69, 1,086,076.59 and 442,920.50

Step by Step Solution

1. Step 1: Write the proportion equation
   787,151.69 : 1,086,076.59 = 442,920.50 : x
2. Step 2: Convert to fraction form
   787,151.69/1,086,076.59 = 442,920.50/x
3. Step 3: Cross multiply
   787,151.69x = 1,086,076.59 × 442,920.50
4. Step 4: Simplify right side
   787,151.69x = 481,045,586,281.10
5. Step 5: Solve for x
   x = 481,045,586,281.10/787,151.69
6. Step 6: Final answer
   x = 611,121.84