Finding the Fourth Proportional to 82,432.50, 123,648.43 and 34,455.21

Step by Step Solution

1. Step 1: Write the proportion equation
   82,432.50 : 123,648.43 = 34,455.21 : x
2. Step 2: Convert to fraction form
   82,432.50/123,648.43 = 34,455.21/x
3. Step 3: Cross multiply
   82,432.50x = 123,648.43 × 34,455.21
4. Step 4: Simplify right side
   82,432.50x = 4,260,332,621.82
5. Step 5: Solve for x
   x = 4,260,332,621.82/82,432.50
6. Step 6: Final answer
   x = 51,682.68