Finding the Fourth Proportional to 484,936.43, 727,404.71 and 147,978.86

Step by Step Solution

1. Step 1: Write the proportion equation
   484,936.43 : 727,404.71 = 147,978.86 : x
2. Step 2: Convert to fraction form
   484,936.43/727,404.71 = 147,978.86/x
3. Step 3: Cross multiply
   484,936.43x = 727,404.71 × 147,978.86
4. Step 4: Simplify right side
   484,936.43x = 107,640,515,367.51
5. Step 5: Solve for x
   x = 107,640,515,367.51/484,936.43
6. Step 6: Final answer
   x = 221,968.30