Finding the Fourth Proportional to 109,078.80, 150,603.36 and 83,540.04

Step by Step Solution

1. Step 1: Write the proportion equation
   109,078.80 : 150,603.36 = 83,540.04 : x
2. Step 2: Convert to fraction form
   109,078.80/150,603.36 = 83,540.04/x
3. Step 3: Cross multiply
   109,078.80x = 150,603.36 × 83,540.04
4. Step 4: Simplify right side
   109,078.80x = 12,581,410,718.53
5. Step 5: Solve for x
   x = 12,581,410,718.53/109,078.80
6. Step 6: Final answer
   x = 115,342.40