Finding the Fourth Proportional to 87,721.08, 121,047.78 and 49,478.52

Step by Step Solution

1. Step 1: Write the proportion equation
   87,721.08 : 121,047.78 = 49,478.52 : x
2. Step 2: Convert to fraction form
   87,721.08/121,047.78 = 49,478.52/x
3. Step 3: Cross multiply
   87,721.08x = 121,047.78 × 49,478.52
4. Step 4: Simplify right side
   87,721.08x = 5,989,265,003.69
5. Step 5: Solve for x
   x = 5,989,265,003.69/87,721.08
6. Step 6: Final answer
   x = 68,276.23