Finding the Fourth Proportional to 226,103.32, 339,146.61 and 91,225.72

Step by Step Solution

1. Step 1: Write the proportion equation
   226,103.32 : 339,146.61 = 91,225.72 : x
2. Step 2: Convert to fraction form
   226,103.32/339,146.61 = 91,225.72/x
3. Step 3: Cross multiply
   226,103.32x = 339,146.61 × 91,225.72
4. Step 4: Simplify right side
   226,103.32x = 30,938,893,682.81
5. Step 5: Solve for x
   x = 30,938,893,682.81/226,103.32
6. Step 6: Final answer
   x = 136,835.20