Finding the Fourth Proportional to 116,045.16, 160,140.96 and 65,057.64

Step by Step Solution

1. Step 1: Write the proportion equation
   116,045.16 : 160,140.96 = 65,057.64 : x
2. Step 2: Convert to fraction form
   116,045.16/160,140.96 = 65,057.64/x
3. Step 3: Cross multiply
   116,045.16x = 160,140.96 × 65,057.64
4. Step 4: Simplify right side
   116,045.16x = 10,418,392,924.93
5. Step 5: Solve for x
   x = 10,418,392,924.93/116,045.16
6. Step 6: Final answer
   x = 89,778.78