Finding the Fourth Proportional to 142,081.98, 213,053.85 and 82,936.86

Step by Step Solution

1. Step 1: Write the proportion equation
   142,081.98 : 213,053.85 = 82,936.86 : x
2. Step 2: Convert to fraction form
   142,081.98/213,053.85 = 82,936.86/x
3. Step 3: Cross multiply
   142,081.98x = 213,053.85 × 82,936.86
4. Step 4: Simplify right side
   142,081.98x = 17,670,017,329.91
5. Step 5: Solve for x
   x = 17,670,017,329.91/142,081.98
6. Step 6: Final answer
   x = 124,364.94