Finding the Fourth Proportional to 215,300.08, 322,951.74 and 82,144.54

Step by Step Solution

1. Step 1: Write the proportion equation
   215,300.08 : 322,951.74 = 82,144.54 : x
2. Step 2: Convert to fraction form
   215,300.08/322,951.74 = 82,144.54/x
3. Step 3: Cross multiply
   215,300.08x = 322,951.74 × 82,144.54
4. Step 4: Simplify right side
   215,300.08x = 26,528,722,124.50
5. Step 5: Solve for x
   x = 26,528,722,124.50/215,300.08
6. Step 6: Final answer
   x = 123,217.43