Finding the Fourth Proportional to 129,530.72, 194,322.27 and 54,651.05

Step by Step Solution

1. Step 1: Write the proportion equation
   129,530.72 : 194,322.27 = 54,651.05 : x
2. Step 2: Convert to fraction form
   129,530.72/194,322.27 = 54,651.05/x
3. Step 3: Cross multiply
   129,530.72x = 194,322.27 × 54,651.05
4. Step 4: Simplify right side
   129,530.72x = 10,619,915,122.27
5. Step 5: Solve for x
   x = 10,619,915,122.27/129,530.72
6. Step 6: Final answer
   x = 81,987.62