Finding the Fourth Proportional to 116,022.99, 160,105.64 and 65,718.75

Step by Step Solution

1. Step 1: Write the proportion equation
   116,022.99 : 160,105.64 = 65,718.75 : x
2. Step 2: Convert to fraction form
   116,022.99/160,105.64 = 65,718.75/x
3. Step 3: Cross multiply
   116,022.99x = 160,105.64 × 65,718.75
4. Step 4: Simplify right side
   116,022.99x = 10,521,942,200.16
5. Step 5: Solve for x
   x = 10,521,942,200.16/116,022.99
6. Step 6: Final answer
   x = 90,688.42