Finding the Fourth Proportional to 116,459.09, 160,719.25 and 65,487.87

Step by Step Solution

1. Step 1: Write the proportion equation
   116,459.09 : 160,719.25 = 65,487.87 : x
2. Step 2: Convert to fraction form
   116,459.09/160,719.25 = 65,487.87/x
3. Step 3: Cross multiply
   116,459.09x = 160,719.25 × 65,487.87
4. Step 4: Simplify right side
   116,459.09x = 10,525,161,186.78
5. Step 5: Solve for x
   x = 10,525,161,186.78/116,459.09
6. Step 6: Final answer
   x = 90,376.47