Finding the Fourth Proportional to 115,996.38, 160,086.24 and 65,017.77

Step by Step Solution

1. Step 1: Write the proportion equation
   115,996.38 : 160,086.24 = 65,017.77 : x
2. Step 2: Convert to fraction form
   115,996.38/160,086.24 = 65,017.77/x
3. Step 3: Cross multiply
   115,996.38x = 160,086.24 × 65,017.77
4. Step 4: Simplify right side
   115,996.38x = 10,408,450,332.48
5. Step 5: Solve for x
   x = 10,408,450,332.48/115,996.38
6. Step 6: Final answer
   x = 89,730.82