Finding the Fourth Proportional to 168,721.92, 253,076.54 and 42,363

Step by Step Solution

1. Step 1: Write the proportion equation
   168,721.92 : 253,076.54 = 42,363 : x
2. Step 2: Convert to fraction form
   168,721.92/253,076.54 = 42,363/x
3. Step 3: Cross multiply
   168,721.92x = 253,076.54 × 42,363
4. Step 4: Simplify right side
   168,721.92x = 10,721,081,464.02
5. Step 5: Solve for x
   x = 10,721,081,464.02/168,721.92
6. Step 6: Final answer
   x = 63,542.91