Finding the Fourth Proportional to 601,420.35, 901,498.78 and 222,099.31

Step by Step Solution

1. Step 1: Write the proportion equation
   601,420.35 : 901,498.78 = 222,099.31 : x
2. Step 2: Convert to fraction form
   601,420.35/901,498.78 = 222,099.31/x
3. Step 3: Cross multiply
   601,420.35x = 901,498.78 × 222,099.31
4. Step 4: Simplify right side
   601,420.35x = 200,222,257,003.84
5. Step 5: Solve for x
   x = 200,222,257,003.84/601,420.35
6. Step 6: Final answer
   x = 332,915.67