Finding the Fourth Proportional to 139,481.12, 192,424.56 and 82,861.76

Step by Step Solution

1. Step 1: Write the proportion equation
   139,481.12 : 192,424.56 = 82,861.76 : x
2. Step 2: Convert to fraction form
   139,481.12/192,424.56 = 82,861.76/x
3. Step 3: Cross multiply
   139,481.12x = 192,424.56 × 82,861.76
4. Step 4: Simplify right side
   139,481.12x = 15,944,637,708.83
5. Step 5: Solve for x
   x = 15,944,637,708.83/139,481.12
6. Step 6: Final answer
   x = 114,313.95