Finding the Fourth Proportional to 64,936.89, 89,654.24 and 53,028.68

Step by Step Solution

1. Step 1: Write the proportion equation
   64,936.89 : 89,654.24 = 53,028.68 : x
2. Step 2: Convert to fraction form
   64,936.89/89,654.24 = 53,028.68/x
3. Step 3: Cross multiply
   64,936.89x = 89,654.24 × 53,028.68
4. Step 4: Simplify right side
   64,936.89x = 4,754,245,687.90
5. Step 5: Solve for x
   x = 4,754,245,687.90/64,936.89
6. Step 6: Final answer
   x = 73,213.33