Finding the Fourth Proportional to 132,966.69, 199,487.57 and 54,137.49

Step by Step Solution

1. Step 1: Write the proportion equation
   132,966.69 : 199,487.57 = 54,137.49 : x
2. Step 2: Convert to fraction form
   132,966.69/199,487.57 = 54,137.49/x
3. Step 3: Cross multiply
   132,966.69x = 199,487.57 × 54,137.49
4. Step 4: Simplify right side
   132,966.69x = 10,799,756,055.31
5. Step 5: Solve for x
   x = 10,799,756,055.31/132,966.69
6. Step 6: Final answer
   x = 81,221.52