Finding the Fourth Proportional to 129,443.72, 194,087.82 and 87,764.36

Step by Step Solution

1. Step 1: Write the proportion equation
   129,443.72 : 194,087.82 = 87,764.36 : x
2. Step 2: Convert to fraction form
   129,443.72/194,087.82 = 87,764.36/x
3. Step 3: Cross multiply
   129,443.72x = 194,087.82 × 87,764.36
4. Step 4: Simplify right side
   129,443.72x = 17,033,993,306.10
5. Step 5: Solve for x
   x = 17,033,993,306.10/129,443.72
6. Step 6: Final answer
   x = 131,593.82