Finding the Fourth Proportional to 271,059.15, 406,608.71 and 71,378.16

Step by Step Solution

1. Step 1: Write the proportion equation
   271,059.15 : 406,608.71 = 71,378.16 : x
2. Step 2: Convert to fraction form
   271,059.15/406,608.71 = 71,378.16/x
3. Step 3: Cross multiply
   271,059.15x = 406,608.71 × 71,378.16
4. Step 4: Simplify right side
   271,059.15x = 29,022,979,678.10
5. Step 5: Solve for x
   x = 29,022,979,678.10/271,059.15
6. Step 6: Final answer
   x = 107,072.49