Finding the Fourth Proportional to 601,018.72, 901,985.12 and 222,297.76

Step by Step Solution

1. Step 1: Write the proportion equation
   601,018.72 : 901,985.12 = 222,297.76 : x
2. Step 2: Convert to fraction form
   601,018.72/901,985.12 = 222,297.76/x
3. Step 3: Cross multiply
   601,018.72x = 901,985.12 × 222,297.76
4. Step 4: Simplify right side
   601,018.72x = 200,509,271,729.33
5. Step 5: Solve for x
   x = 200,509,271,729.33/601,018.72
6. Step 6: Final answer
   x = 333,615.68