Finding the Fourth Proportional to 142,165.40, 213,116.27 and 53,477.69

Step by Step Solution

1. Step 1: Write the proportion equation
   142,165.40 : 213,116.27 = 53,477.69 : x
2. Step 2: Convert to fraction form
   142,165.40/213,116.27 = 53,477.69/x
3. Step 3: Cross multiply
   142,165.40x = 213,116.27 × 53,477.69
4. Step 4: Simplify right side
   142,165.40x = 11,396,964,488.05
5. Step 5: Solve for x
   x = 11,396,964,488.05/142,165.40
6. Step 6: Final answer
   x = 80,166.94