Finding the Fourth Proportional to 142,142.43, 213,029.26 and 57,804.42

Step by Step Solution

1. Step 1: Write the proportion equation
   142,142.43 : 213,029.26 = 57,804.42 : x
2. Step 2: Convert to fraction form
   142,142.43/213,029.26 = 57,804.42/x
3. Step 3: Cross multiply
   142,142.43x = 213,029.26 × 57,804.42
4. Step 4: Simplify right side
   142,142.43x = 12,314,032,598.54
5. Step 5: Solve for x
   x = 12,314,032,598.54/142,142.43
6. Step 6: Final answer
   x = 86,631.65