Finding the Fourth Proportional to 116,442, 160,689.96 and 66,150.72

Step by Step Solution

1. Step 1: Write the proportion equation
   116,442 : 160,689.96 = 66,150.72 : x
2. Step 2: Convert to fraction form
   116,442/160,689.96 = 66,150.72/x
3. Step 3: Cross multiply
   116,442x = 160,689.96 × 66,150.72
4. Step 4: Simplify right side
   116,442x = 10,629,756,550.77
5. Step 5: Solve for x
   x = 10,629,756,550.77/116,442
6. Step 6: Final answer
   x = 91,287.99