Finding the Fourth Proportional to 271,233.90, 406,850.82 and 91,304.21

Step by Step Solution

1. Step 1: Write the proportion equation
   271,233.90 : 406,850.82 = 91,304.21 : x
2. Step 2: Convert to fraction form
   271,233.90/406,850.82 = 91,304.21/x
3. Step 3: Cross multiply
   271,233.90x = 406,850.82 × 91,304.21
4. Step 4: Simplify right side
   271,233.90x = 37,147,193,382.69
5. Step 5: Solve for x
   x = 37,147,193,382.69/271,233.90
6. Step 6: Final answer
   x = 136,956.31