Finding the Fourth Proportional to 139,314.42, 192,185.73 and 82,685.70

Step by Step Solution

1. Step 1: Write the proportion equation
   139,314.42 : 192,185.73 = 82,685.70 : x
2. Step 2: Convert to fraction form
   139,314.42/192,185.73 = 82,685.70/x
3. Step 3: Cross multiply
   139,314.42x = 192,185.73 × 82,685.70
4. Step 4: Simplify right side
   139,314.42x = 15,891,011,615.06
5. Step 5: Solve for x
   x = 15,891,011,615.06/139,314.42
6. Step 6: Final answer
   x = 114,065.81