Finding the Fourth Proportional to 429,787.82, 644,810.51 and 173,488.43

Step by Step Solution

1. Step 1: Write the proportion equation
   429,787.82 : 644,810.51 = 173,488.43 : x
2. Step 2: Convert to fraction form
   429,787.82/644,810.51 = 173,488.43/x
3. Step 3: Cross multiply
   429,787.82x = 644,810.51 × 173,488.43
4. Step 4: Simplify right side
   429,787.82x = 111,867,165,073.15
5. Step 5: Solve for x
   x = 111,867,165,073.15/429,787.82
6. Step 6: Final answer
   x = 260,284.63