Finding the Fourth Proportional to 72,892.38, 108,939.20 and 53,212.38

Step by Step Solution

1. Step 1: Write the proportion equation
   72,892.38 : 108,939.20 = 53,212.38 : x
2. Step 2: Convert to fraction form
   72,892.38/108,939.20 = 53,212.38/x
3. Step 3: Cross multiply
   72,892.38x = 108,939.20 × 53,212.38
4. Step 4: Simplify right side
   72,892.38x = 5,796,914,107.30
5. Step 5: Solve for x
   x = 5,796,914,107.30/72,892.38
6. Step 6: Final answer
   x = 79,527.02