Finding the Fourth Proportional to 222,895, 334,396.52 and 128,185.80

Step by Step Solution

1. Step 1: Write the proportion equation
   222,895 : 334,396.52 = 128,185.80 : x
2. Step 2: Convert to fraction form
   222,895/334,396.52 = 128,185.80/x
3. Step 3: Cross multiply
   222,895x = 334,396.52 × 128,185.80
4. Step 4: Simplify right side
   222,895x = 42,864,885,433.42
5. Step 5: Solve for x
   x = 42,864,885,433.42/222,895
6. Step 6: Final answer
   x = 192,309.77