Finding the Fourth Proportional to 139,493.86, 192,433.86 and 82,865.14

Step by Step Solution

1. Step 1: Write the proportion equation
   139,493.86 : 192,433.86 = 82,865.14 : x
2. Step 2: Convert to fraction form
   139,493.86/192,433.86 = 82,865.14/x
3. Step 3: Cross multiply
   139,493.86x = 192,433.86 × 82,865.14
4. Step 4: Simplify right side
   139,493.86x = 15,946,058,749.64
5. Step 5: Solve for x
   x = 15,946,058,749.64/139,493.86
6. Step 6: Final answer
   x = 114,313.70