Finding the Fourth Proportional to 143,156.92, 214,667.94 and 53,137.27

Step by Step Solution

1. Step 1: Write the proportion equation
   143,156.92 : 214,667.94 = 53,137.27 : x
2. Step 2: Convert to fraction form
   143,156.92/214,667.94 = 53,137.27/x
3. Step 3: Cross multiply
   143,156.92x = 214,667.94 × 53,137.27
4. Step 4: Simplify right side
   143,156.92x = 11,406,868,288.12
5. Step 5: Solve for x
   x = 11,406,868,288.12/143,156.92
6. Step 6: Final answer
   x = 79,680.87