Finding the Fourth Proportional to 72,893.38, 108,940.69 and 53,213.38

Step by Step Solution

1. Step 1: Write the proportion equation
   72,893.38 : 108,940.69 = 53,213.38 : x
2. Step 2: Convert to fraction form
   72,893.38/108,940.69 = 53,213.38/x
3. Step 3: Cross multiply
   72,893.38x = 108,940.69 × 53,213.38
4. Step 4: Simplify right side
   72,893.38x = 5,797,102,334.43
5. Step 5: Solve for x
   x = 5,797,102,334.43/72,893.38
6. Step 6: Final answer
   x = 79,528.52