Finding the Fourth Proportional to 510,408.56, 765,682.89 and 173,358.72

Step by Step Solution

1. Step 1: Write the proportion equation
   510,408.56 : 765,682.89 = 173,358.72 : x
2. Step 2: Convert to fraction form
   510,408.56/765,682.89 = 173,358.72/x
3. Step 3: Cross multiply
   510,408.56x = 765,682.89 × 173,358.72
4. Step 4: Simplify right side
   510,408.56x = 132,737,805,736.30
5. Step 5: Solve for x
   x = 132,737,805,736.30/510,408.56
6. Step 6: Final answer
   x = 260,061.87