Finding the Fourth Proportional to 328,764.15, 493,162.43 and 171,300.15

Step by Step Solution

1. Step 1: Write the proportion equation
   328,764.15 : 493,162.43 = 171,300.15 : x
2. Step 2: Convert to fraction form
   328,764.15/493,162.43 = 171,300.15/x
3. Step 3: Cross multiply
   328,764.15x = 493,162.43 × 171,300.15
4. Step 4: Simplify right side
   328,764.15x = 84,478,797,376.86
5. Step 5: Solve for x
   x = 84,478,797,376.86/328,764.15
6. Step 6: Final answer
   x = 256,958.67