Finding the Fourth Proportional to 271,504.10, 407,256.15 and 123,760.10

Step by Step Solution

1. Step 1: Write the proportion equation
   271,504.10 : 407,256.15 = 123,760.10 : x
2. Step 2: Convert to fraction form
   271,504.10/407,256.15 = 123,760.10/x
3. Step 3: Cross multiply
   271,504.10x = 407,256.15 × 123,760.10
4. Step 4: Simplify right side
   271,504.10x = 50,402,061,849.62
5. Step 5: Solve for x
   x = 50,402,061,849.62/271,504.10
6. Step 6: Final answer
   x = 185,640.15