Finding the Fourth Proportional to 196,431, 271,074.78 and 107,007

Step by Step Solution

1. Step 1: Write the proportion equation
   196,431 : 271,074.78 = 107,007 : x
2. Step 2: Convert to fraction form
   196,431/271,074.78 = 107,007/x
3. Step 3: Cross multiply
   196,431x = 271,074.78 × 107,007
4. Step 4: Simplify right side
   196,431x = 29,006,898,983.46
5. Step 5: Solve for x
   x = 29,006,898,983.46/196,431
6. Step 6: Final answer
   x = 147,669.66