Finding the Fourth Proportional to 143,131.81, 214,739.27 and 57,698.58

Step by Step Solution

1. Step 1: Write the proportion equation
   143,131.81 : 214,739.27 = 57,698.58 : x
2. Step 2: Convert to fraction form
   143,131.81/214,739.27 = 57,698.58/x
3. Step 3: Cross multiply
   143,131.81x = 214,739.27 × 57,698.58
4. Step 4: Simplify right side
   143,131.81x = 12,390,150,949.24
5. Step 5: Solve for x
   x = 12,390,150,949.24/143,131.81
6. Step 6: Final answer
   x = 86,564.62