Finding the Fourth Proportional to 116,140.52, 160,322.94 and 78,465.80

Step by Step Solution

1. Step 1: Write the proportion equation
   116,140.52 : 160,322.94 = 78,465.80 : x
2. Step 2: Convert to fraction form
   116,140.52/160,322.94 = 78,465.80/x
3. Step 3: Cross multiply
   116,140.52x = 160,322.94 × 78,465.80
4. Step 4: Simplify right side
   116,140.52x = 12,579,867,745.45
5. Step 5: Solve for x
   x = 12,579,867,745.45/116,140.52
6. Step 6: Final answer
   x = 108,315.92