Finding the Fourth Proportional to 226,156.86, 339,346.17 and 91,215.27

Step by Step Solution

1. Step 1: Write the proportion equation
   226,156.86 : 339,346.17 = 91,215.27 : x
2. Step 2: Convert to fraction form
   226,156.86/339,346.17 = 91,215.27/x
3. Step 3: Cross multiply
   226,156.86x = 339,346.17 × 91,215.27
4. Step 4: Simplify right side
   226,156.86x = 30,953,552,520.02
5. Step 5: Solve for x
   x = 30,953,552,520.02/226,156.86
6. Step 6: Final answer
   x = 136,867.63