Finding the Fourth Proportional to 196,578.72, 271,278 and 107,154.72

Step by Step Solution

1. Step 1: Write the proportion equation
   196,578.72 : 271,278 = 107,154.72 : x
2. Step 2: Convert to fraction form
   196,578.72/271,278 = 107,154.72/x
3. Step 3: Cross multiply
   196,578.72x = 271,278 × 107,154.72
4. Step 4: Simplify right side
   196,578.72x = 29,068,718,132.16
5. Step 5: Solve for x
   x = 29,068,718,132.16/196,578.72
6. Step 6: Final answer
   x = 147,873.17