Finding the Fourth Proportional to 142,061.57, 213,029.57 and 53,252.78

Step by Step Solution

1. Step 1: Write the proportion equation
   142,061.57 : 213,029.57 = 53,252.78 : x
2. Step 2: Convert to fraction form
   142,061.57/213,029.57 = 53,252.78/x
3. Step 3: Cross multiply
   142,061.57x = 213,029.57 × 53,252.78
4. Step 4: Simplify right side
   142,061.57x = 11,344,415,892.69
5. Step 5: Solve for x
   x = 11,344,415,892.69/142,061.57
6. Step 6: Final answer
   x = 79,855.63