Finding the Fourth Proportional to 142,003.04, 213,114.72 and 53,337.20

Step by Step Solution

1. Step 1: Write the proportion equation
   142,003.04 : 213,114.72 = 53,337.20 : x
2. Step 2: Convert to fraction form
   142,003.04/213,114.72 = 53,337.20/x
3. Step 3: Cross multiply
   142,003.04x = 213,114.72 × 53,337.20
4. Step 4: Simplify right side
   142,003.04x = 11,366,942,443.58
5. Step 5: Solve for x
   x = 11,366,942,443.58/142,003.04
6. Step 6: Final answer
   x = 80,047.18