Finding the Fourth Proportional to 139,578.56, 192,554.88 and 82,957.76

Step by Step Solution

1. Step 1: Write the proportion equation
   139,578.56 : 192,554.88 = 82,957.76 : x
2. Step 2: Convert to fraction form
   139,578.56/192,554.88 = 82,957.76/x
3. Step 3: Cross multiply
   139,578.56x = 192,554.88 × 82,957.76
4. Step 4: Simplify right side
   139,578.56x = 15,973,921,521.87
5. Step 5: Solve for x
   x = 15,973,921,521.87/139,578.56
6. Step 6: Final answer
   x = 114,443.95