Finding the Fourth Proportional to 89,665.48, 123,732.66 and 53,857

Step by Step Solution

1. Step 1: Write the proportion equation
   89,665.48 : 123,732.66 = 53,857 : x
2. Step 2: Convert to fraction form
   89,665.48/123,732.66 = 53,857/x
3. Step 3: Cross multiply
   89,665.48x = 123,732.66 × 53,857
4. Step 4: Simplify right side
   89,665.48x = 6,663,869,869.62
5. Step 5: Solve for x
   x = 6,663,869,869.62/89,665.48
6. Step 6: Final answer
   x = 74,319.23