Finding the Fourth Proportional to 271,386.05, 406,414.50 and 191,227.03

Step by Step Solution

1. Step 1: Write the proportion equation
   271,386.05 : 406,414.50 = 191,227.03 : x
2. Step 2: Convert to fraction form
   271,386.05/406,414.50 = 191,227.03/x
3. Step 3: Cross multiply
   271,386.05x = 406,414.50 × 191,227.03
4. Step 4: Simplify right side
   271,386.05x = 77,717,436,050.80
5. Step 5: Solve for x
   x = 77,717,436,050.80/271,386.05
6. Step 6: Final answer
   x = 286,372.26