Finding the Fourth Proportional to 116,120.90, 160,259.38 and 65,814.50

Step by Step Solution

1. Step 1: Write the proportion equation
   116,120.90 : 160,259.38 = 65,814.50 : x
2. Step 2: Convert to fraction form
   116,120.90/160,259.38 = 65,814.50/x
3. Step 3: Cross multiply
   116,120.90x = 160,259.38 × 65,814.50
4. Step 4: Simplify right side
   116,120.90x = 10,547,390,965.01
5. Step 5: Solve for x
   x = 10,547,390,965.01/116,120.90
6. Step 6: Final answer
   x = 90,831.12