Finding the Fourth Proportional to 136,081.73, 187,763.78 and 82,356.05

Step by Step Solution

1. Step 1: Write the proportion equation
   136,081.73 : 187,763.78 = 82,356.05 : x
2. Step 2: Convert to fraction form
   136,081.73/187,763.78 = 82,356.05/x
3. Step 3: Cross multiply
   136,081.73x = 187,763.78 × 82,356.05
4. Step 4: Simplify right side
   136,081.73x = 15,463,481,903.27
5. Step 5: Solve for x
   x = 15,463,481,903.27/136,081.73
6. Step 6: Final answer
   x = 113,633.79