Finding the Fourth Proportional to 116,639.46, 160,967.57 and 65,655.48

Step by Step Solution

1. Step 1: Write the proportion equation
   116,639.46 : 160,967.57 = 65,655.48 : x
2. Step 2: Convert to fraction form
   116,639.46/160,967.57 = 65,655.48/x
3. Step 3: Cross multiply
   116,639.46x = 160,967.57 × 65,655.48
4. Step 4: Simplify right side
   116,639.46x = 10,568,403,072.78
5. Step 5: Solve for x
   x = 10,568,403,072.78/116,639.46
6. Step 6: Final answer
   x = 90,607.44