Finding the Fourth Proportional to 116,395.12, 160,613.28 and 65,399.74

Step by Step Solution

1. Step 1: Write the proportion equation
   116,395.12 : 160,613.28 = 65,399.74 : x
2. Step 2: Convert to fraction form
   116,395.12/160,613.28 = 65,399.74/x
3. Step 3: Cross multiply
   116,395.12x = 160,613.28 × 65,399.74
4. Step 4: Simplify right side
   116,395.12x = 10,504,066,752.55
5. Step 5: Solve for x
   x = 10,504,066,752.55/116,395.12
6. Step 6: Final answer
   x = 90,244.91