Finding the Fourth Proportional to 139,501.40, 192,512.70 and 82,143.22

Step by Step Solution

1. Step 1: Write the proportion equation
   139,501.40 : 192,512.70 = 82,143.22 : x
2. Step 2: Convert to fraction form
   139,501.40/192,512.70 = 82,143.22/x
3. Step 3: Cross multiply
   139,501.40x = 192,512.70 × 82,143.22
4. Step 4: Simplify right side
   139,501.40x = 15,813,613,068.89
5. Step 5: Solve for x
   x = 15,813,613,068.89/139,501.40
6. Step 6: Final answer
   x = 113,358.10