Finding the Fourth Proportional to 129,960.52, 194,891.57 and 51,031.69

Step by Step Solution

1. Step 1: Write the proportion equation
   129,960.52 : 194,891.57 = 51,031.69 : x
2. Step 2: Convert to fraction form
   129,960.52/194,891.57 = 51,031.69/x
3. Step 3: Cross multiply
   129,960.52x = 194,891.57 × 51,031.69
4. Step 4: Simplify right side
   129,960.52x = 9,945,645,632.83
5. Step 5: Solve for x
   x = 9,945,645,632.83/129,960.52
6. Step 6: Final answer
   x = 76,528.21