Finding the Fourth Proportional to 142,164.72, 213,234.64 and 57,933.72

Step by Step Solution

1. Step 1: Write the proportion equation
   142,164.72 : 213,234.64 = 57,933.72 : x
2. Step 2: Convert to fraction form
   142,164.72/213,234.64 = 57,933.72/x
3. Step 3: Cross multiply
   142,164.72x = 213,234.64 × 57,933.72
4. Step 4: Simplify right side
   142,164.72x = 12,353,475,928.06
5. Step 5: Solve for x
   x = 12,353,475,928.06/142,164.72
6. Step 6: Final answer
   x = 86,895.51