Finding the Fourth Proportional to 259,672.70, 389,436.15 and 82,234.10

Step by Step Solution

1. Step 1: Write the proportion equation
   259,672.70 : 389,436.15 = 82,234.10 : x
2. Step 2: Convert to fraction form
   259,672.70/389,436.15 = 82,234.10/x
3. Step 3: Cross multiply
   259,672.70x = 389,436.15 × 82,234.10
4. Step 4: Simplify right side
   259,672.70x = 32,024,931,302.72
5. Step 5: Solve for x
   x = 32,024,931,302.72/259,672.70
6. Step 6: Final answer
   x = 123,328.06