Finding the Fourth Proportional to 142,134.32, 213,156.12 and 57,894.32

Step by Step Solution

1. Step 1: Write the proportion equation
   142,134.32 : 213,156.12 = 57,894.32 : x
2. Step 2: Convert to fraction form
   142,134.32/213,156.12 = 57,894.32/x
3. Step 3: Cross multiply
   142,134.32x = 213,156.12 × 57,894.32
4. Step 4: Simplify right side
   142,134.32x = 12,340,528,621.24
5. Step 5: Solve for x
   x = 12,340,528,621.24/142,134.32
6. Step 6: Final answer
   x = 86,823.00