Finding the Fourth Proportional to 222,546.24, 333,715.68 and 129,078.72

Step by Step Solution

1. Step 1: Write the proportion equation
   222,546.24 : 333,715.68 = 129,078.72 : x
2. Step 2: Convert to fraction form
   222,546.24/333,715.68 = 129,078.72/x
3. Step 3: Cross multiply
   222,546.24x = 333,715.68 × 129,078.72
4. Step 4: Simplify right side
   222,546.24x = 43,075,592,818.33
5. Step 5: Solve for x
   x = 43,075,592,818.33/222,546.24
6. Step 6: Final answer
   x = 193,557.94