Finding the Fourth Proportional to 271,392.56, 406,801.34 and 91,306.50

Step by Step Solution

1. Step 1: Write the proportion equation
   271,392.56 : 406,801.34 = 91,306.50 : x
2. Step 2: Convert to fraction form
   271,392.56/406,801.34 = 91,306.50/x
3. Step 3: Cross multiply
   271,392.56x = 406,801.34 × 91,306.50
4. Step 4: Simplify right side
   271,392.56x = 37,143,606,550.71
5. Step 5: Solve for x
   x = 37,143,606,550.71/271,392.56
6. Step 6: Final answer
   x = 136,863.02