Finding the Fourth Proportional to 222,905, 334,411.52 and 128,195.80

Step by Step Solution

1. Step 1: Write the proportion equation
   222,905 : 334,411.52 = 128,195.80 : x
2. Step 2: Convert to fraction form
   222,905/334,411.52 = 128,195.80/x
3. Step 3: Cross multiply
   222,905x = 334,411.52 × 128,195.80
4. Step 4: Simplify right side
   222,905x = 42,870,152,335.62
5. Step 5: Solve for x
   x = 42,870,152,335.62/222,905
6. Step 6: Final answer
   x = 192,324.77