Finding the Fourth Proportional to 222,186.24, 333,175.68 and 128,718.72

Step by Step Solution

1. Step 1: Write the proportion equation
   222,186.24 : 333,175.68 = 128,718.72 : x
2. Step 2: Convert to fraction form
   222,186.24/333,175.68 = 128,718.72/x
3. Step 3: Cross multiply
   222,186.24x = 333,175.68 × 128,718.72
4. Step 4: Simplify right side
   222,186.24x = 42,885,947,064.73
5. Step 5: Solve for x
   x = 42,885,947,064.73/222,186.24
6. Step 6: Final answer
   x = 193,018.02