Finding the Fourth Proportional to 417,826.35, 626,499.18 and 222,839.01

Step by Step Solution

1. Step 1: Write the proportion equation
   417,826.35 : 626,499.18 = 222,839.01 : x
2. Step 2: Convert to fraction form
   417,826.35/626,499.18 = 222,839.01/x
3. Step 3: Cross multiply
   417,826.35x = 626,499.18 × 222,839.01
4. Step 4: Simplify right side
   417,826.35x = 139,608,457,037.01
5. Step 5: Solve for x
   x = 139,608,457,037.01/417,826.35
6. Step 6: Final answer
   x = 334,130.33