Finding the Fourth Proportional to 116,458.37, 160,718.25 and 65,487.15

Step by Step Solution

1. Step 1: Write the proportion equation
   116,458.37 : 160,718.25 = 65,487.15 : x
2. Step 2: Convert to fraction form
   116,458.37/160,718.25 = 65,487.15/x
3. Step 3: Cross multiply
   116,458.37x = 160,718.25 × 65,487.15
4. Step 4: Simplify right side
   116,458.37x = 10,524,979,706.51
5. Step 5: Solve for x
   x = 10,524,979,706.51/116,458.37
6. Step 6: Final answer
   x = 90,375.47