Finding the Fourth Proportional to 139,588.81, 192,626.72 and 82,230.48

Step by Step Solution

1. Step 1: Write the proportion equation
   139,588.81 : 192,626.72 = 82,230.48 : x
2. Step 2: Convert to fraction form
   139,588.81/192,626.72 = 82,230.48/x
3. Step 3: Cross multiply
   139,588.81x = 192,626.72 × 82,230.48
4. Step 4: Simplify right side
   139,588.81x = 15,839,788,006.18
5. Step 5: Solve for x
   x = 15,839,788,006.18/139,588.81
6. Step 6: Final answer
   x = 113,474.63