Finding the Fourth Proportional to 271,678.52, 407,504.63 and 103,185.69

Step by Step Solution

1. Step 1: Write the proportion equation
   271,678.52 : 407,504.63 = 103,185.69 : x
2. Step 2: Convert to fraction form
   271,678.52/407,504.63 = 103,185.69/x
3. Step 3: Cross multiply
   271,678.52x = 407,504.63 × 103,185.69
4. Step 4: Simplify right side
   271,678.52x = 42,048,645,908.82
5. Step 5: Solve for x
   x = 42,048,645,908.82/271,678.52
6. Step 6: Final answer
   x = 154,773.54