Finding the Fourth Proportional to 222,128.72, 333,192.78 and 72,368.72

Step by Step Solution

1. Step 1: Write the proportion equation
   222,128.72 : 333,192.78 = 72,368.72 : x
2. Step 2: Convert to fraction form
   222,128.72/333,192.78 = 72,368.72/x
3. Step 3: Cross multiply
   222,128.72x = 333,192.78 × 72,368.72
4. Step 4: Simplify right side
   222,128.72x = 24,112,735,001.84
5. Step 5: Solve for x
   x = 24,112,735,001.84/222,128.72
6. Step 6: Final answer
   x = 108,552.98