Finding the Fourth Proportional to 171,150.68, 256,512.18 and 82,380.62

Step by Step Solution

1. Step 1: Write the proportion equation
   171,150.68 : 256,512.18 = 82,380.62 : x
2. Step 2: Convert to fraction form
   171,150.68/256,512.18 = 82,380.62/x
3. Step 3: Cross multiply
   171,150.68x = 256,512.18 × 82,380.62
4. Step 4: Simplify right side
   171,150.68x = 21,131,632,425.95
5. Step 5: Solve for x
   x = 21,131,632,425.95/171,150.68
6. Step 6: Final answer
   x = 123,468.00