Finding the Fourth Proportional to 116,280.15, 160,464.56 and 65,293.28

Step by Step Solution

1. Step 1: Write the proportion equation
   116,280.15 : 160,464.56 = 65,293.28 : x
2. Step 2: Convert to fraction form
   116,280.15/160,464.56 = 65,293.28/x
3. Step 3: Cross multiply
   116,280.15x = 160,464.56 × 65,293.28
4. Step 4: Simplify right side
   116,280.15x = 10,477,258,010.55
5. Step 5: Solve for x
   x = 10,477,258,010.55/116,280.15
6. Step 6: Final answer
   x = 90,103.58