Finding the Fourth Proportional to 72,064.16, 108,162.69 and 36,550.40

Step by Step Solution

1. Step 1: Write the proportion equation
   72,064.16 : 108,162.69 = 36,550.40 : x
2. Step 2: Convert to fraction form
   72,064.16/108,162.69 = 36,550.40/x
3. Step 3: Cross multiply
   72,064.16x = 108,162.69 × 36,550.40
4. Step 4: Simplify right side
   72,064.16x = 3,953,389,401.82
5. Step 5: Solve for x
   x = 3,953,389,401.82/72,064.16
6. Step 6: Final answer
   x = 54,859.30