Finding the Fourth Proportional to 260,083.37, 390,138.56 and 82,604.27

Step by Step Solution

1. Step 1: Write the proportion equation
   260,083.37 : 390,138.56 = 82,604.27 : x
2. Step 2: Convert to fraction form
   260,083.37/390,138.56 = 82,604.27/x
3. Step 3: Cross multiply
   260,083.37x = 390,138.56 × 82,604.27
4. Step 4: Simplify right side
   260,083.37x = 32,227,111,819.74
5. Step 5: Solve for x
   x = 32,227,111,819.74/260,083.37
6. Step 6: Final answer
   x = 123,910.70