Finding the Fourth Proportional to 116,459.59, 160,719.94 and 65,488.37

Step by Step Solution

1. Step 1: Write the proportion equation
   116,459.59 : 160,719.94 = 65,488.37 : x
2. Step 2: Convert to fraction form
   116,459.59/160,719.94 = 65,488.37/x
3. Step 3: Cross multiply
   116,459.59x = 160,719.94 × 65,488.37
4. Step 4: Simplify right side
   116,459.59x = 10,525,285,766.06
5. Step 5: Solve for x
   x = 10,525,285,766.06/116,459.59
6. Step 6: Final answer
   x = 90,377.15