Finding the Fourth Proportional to 116,638.83, 160,966.71 and 65,654.85

Step by Step Solution

1. Step 1: Write the proportion equation
   116,638.83 : 160,966.71 = 65,654.85 : x
2. Step 2: Convert to fraction form
   116,638.83/160,966.71 = 65,654.85/x
3. Step 3: Cross multiply
   116,638.83x = 160,966.71 × 65,654.85
4. Step 4: Simplify right side
   116,638.83x = 10,568,245,200.04
5. Step 5: Solve for x
   x = 10,568,245,200.04/116,638.83
6. Step 6: Final answer
   x = 90,606.58