Finding the Fourth Proportional to 116,288.04, 160,479.18 and 65,311.80

Step by Step Solution

1. Step 1: Write the proportion equation
   116,288.04 : 160,479.18 = 65,311.80 : x
2. Step 2: Convert to fraction form
   116,288.04/160,479.18 = 65,311.80/x
3. Step 3: Cross multiply
   116,288.04x = 160,479.18 × 65,311.80
4. Step 4: Simplify right side
   116,288.04x = 10,481,184,108.32
5. Step 5: Solve for x
   x = 10,481,184,108.32/116,288.04
6. Step 6: Final answer
   x = 90,131.23