Finding the Fourth Proportional to 71,691.48, 98,866.44 and 54,665.82

Step by Step Solution

1. Step 1: Write the proportion equation
   71,691.48 : 98,866.44 = 54,665.82 : x
2. Step 2: Convert to fraction form
   71,691.48/98,866.44 = 54,665.82/x
3. Step 3: Cross multiply
   71,691.48x = 98,866.44 × 54,665.82
4. Step 4: Simplify right side
   71,691.48x = 5,404,615,013.08
5. Step 5: Solve for x
   x = 5,404,615,013.08/71,691.48
6. Step 6: Final answer
   x = 75,387.13