Finding the Fourth Proportional to 271,104.42, 407,029.29 and 138,074.34

Step by Step Solution

1. Step 1: Write the proportion equation
   271,104.42 : 407,029.29 = 138,074.34 : x
2. Step 2: Convert to fraction form
   271,104.42/407,029.29 = 138,074.34/x
3. Step 3: Cross multiply
   271,104.42x = 407,029.29 × 138,074.34
4. Step 4: Simplify right side
   271,104.42x = 56,200,300,577.42
5. Step 5: Solve for x
   x = 56,200,300,577.42/271,104.42
6. Step 6: Final answer
   x = 207,301.31