Finding the Fourth Proportional to 428,379.84, 642,359.82 and 175,591.58

Step by Step Solution

1. Step 1: Write the proportion equation
   428,379.84 : 642,359.82 = 175,591.58 : x
2. Step 2: Convert to fraction form
   428,379.84/642,359.82 = 175,591.58/x
3. Step 3: Cross multiply
   428,379.84x = 642,359.82 × 175,591.58
4. Step 4: Simplify right side
   428,379.84x = 112,792,972,510.52
5. Step 5: Solve for x
   x = 112,792,972,510.52/428,379.84
6. Step 6: Final answer
   x = 263,301.31