Finding the Fourth Proportional to 128,067.57, 176,697.86 and 82,747.53

Step by Step Solution

1. Step 1: Write the proportion equation
   128,067.57 : 176,697.86 = 82,747.53 : x
2. Step 2: Convert to fraction form
   128,067.57/176,697.86 = 82,747.53/x
3. Step 3: Cross multiply
   128,067.57x = 176,697.86 × 82,747.53
4. Step 4: Simplify right side
   128,067.57x = 14,621,311,057.55
5. Step 5: Solve for x
   x = 14,621,311,057.55/128,067.57
6. Step 6: Final answer
   x = 114,168.72