Finding the Fourth Proportional to 72,898.38, 108,948.15 and 53,218.38

Step by Step Solution

1. Step 1: Write the proportion equation
   72,898.38 : 108,948.15 = 53,218.38 : x
2. Step 2: Convert to fraction form
   72,898.38/108,948.15 = 53,218.38/x
3. Step 3: Cross multiply
   72,898.38x = 108,948.15 × 53,218.38
4. Step 4: Simplify right side
   72,898.38x = 5,798,043,780.91
5. Step 5: Solve for x
   x = 5,798,043,780.91/72,898.38
6. Step 6: Final answer
   x = 79,535.98