Finding the Fourth Proportional to 139,379.96, 192,344.82 and 82,021.52

Step by Step Solution

1. Step 1: Write the proportion equation
   139,379.96 : 192,344.82 = 82,021.52 : x
2. Step 2: Convert to fraction form
   139,379.96/192,344.82 = 82,021.52/x
3. Step 3: Cross multiply
   139,379.96x = 192,344.82 × 82,021.52
4. Step 4: Simplify right side
   139,379.96x = 15,776,414,500.53
5. Step 5: Solve for x
   x = 15,776,414,500.53/139,379.96
6. Step 6: Final answer
   x = 113,189.98