Finding the Fourth Proportional to 142,142.04, 213,028.16 and 57,803.90

Step by Step Solution

1. Step 1: Write the proportion equation
   142,142.04 : 213,028.16 = 57,803.90 : x
2. Step 2: Convert to fraction form
   142,142.04/213,028.16 = 57,803.90/x
3. Step 3: Cross multiply
   142,142.04x = 213,028.16 × 57,803.90
4. Step 4: Simplify right side
   142,142.04x = 12,313,857,103.66
5. Step 5: Solve for x
   x = 12,313,857,103.66/142,142.04
6. Step 6: Final answer
   x = 86,630.65