Finding the Fourth Proportional to 224,103.06, 309,262.27 and 122,128.55

Step by Step Solution

1. Step 1: Write the proportion equation
   224,103.06 : 309,262.27 = 122,128.55 : x
2. Step 2: Convert to fraction form
   224,103.06/309,262.27 = 122,128.55/x
3. Step 3: Cross multiply
   224,103.06x = 309,262.27 × 122,128.55
4. Step 4: Simplify right side
   224,103.06x = 37,769,752,604.81
5. Step 5: Solve for x
   x = 37,769,752,604.81/224,103.06
6. Step 6: Final answer
   x = 168,537.42