Finding the Fourth Proportional to 139,678.38, 192,722.54 and 82,319.98

Step by Step Solution

1. Step 1: Write the proportion equation
   139,678.38 : 192,722.54 = 82,319.98 : x
2. Step 2: Convert to fraction form
   139,678.38/192,722.54 = 82,319.98/x
3. Step 3: Cross multiply
   139,678.38x = 192,722.54 × 82,319.98
4. Step 4: Simplify right side
   139,678.38x = 15,864,915,638.35
5. Step 5: Solve for x
   x = 15,864,915,638.35/139,678.38
6. Step 6: Final answer
   x = 113,581.76