Finding the Fourth Proportional to 116,487.54, 160,707.09 and 65,488.50

Step by Step Solution

1. Step 1: Write the proportion equation
   116,487.54 : 160,707.09 = 65,488.50 : x
2. Step 2: Convert to fraction form
   116,487.54/160,707.09 = 65,488.50/x
3. Step 3: Cross multiply
   116,487.54x = 160,707.09 × 65,488.50
4. Step 4: Simplify right side
   116,487.54x = 10,524,466,263.47
5. Step 5: Solve for x
   x = 10,524,466,263.47/116,487.54
6. Step 6: Final answer
   x = 90,348.43