Finding the Fourth Proportional to 142,288.32, 213,440.82 and 53,542.59

Step by Step Solution

1. Step 1: Write the proportion equation
   142,288.32 : 213,440.82 = 53,542.59 : x
2. Step 2: Convert to fraction form
   142,288.32/213,440.82 = 53,542.59/x
3. Step 3: Cross multiply
   142,288.32x = 213,440.82 × 53,542.59
4. Step 4: Simplify right side
   142,288.32x = 11,428,174,314.52
5. Step 5: Solve for x
   x = 11,428,174,314.52/142,288.32
6. Step 6: Final answer
   x = 80,317.02