Finding the Fourth Proportional to 107,456.94, 160,396.71 and 99,540

Step by Step Solution

1. Step 1: Write the proportion equation
   107,456.94 : 160,396.71 = 99,540 : x
2. Step 2: Convert to fraction form
   107,456.94/160,396.71 = 99,540/x
3. Step 3: Cross multiply
   107,456.94x = 160,396.71 × 99,540
4. Step 4: Simplify right side
   107,456.94x = 15,965,888,513.40
5. Step 5: Solve for x
   x = 15,965,888,513.40/107,456.94
6. Step 6: Final answer
   x = 148,579.41