Finding the Fourth Proportional to 116,313.24, 160,499.52 and 65,315.64

Step by Step Solution

1. Step 1: Write the proportion equation
   116,313.24 : 160,499.52 = 65,315.64 : x
2. Step 2: Convert to fraction form
   116,313.24/160,499.52 = 65,315.64/x
3. Step 3: Cross multiply
   116,313.24x = 160,499.52 × 65,315.64
4. Step 4: Simplify right side
   116,313.24x = 10,483,128,868.49
5. Step 5: Solve for x
   x = 10,483,128,868.49/116,313.24
6. Step 6: Final answer
   x = 90,128.42