Finding the Fourth Proportional to 375,100.89, 517,642.68 and 222,147.78

Step by Step Solution

1. Step 1: Write the proportion equation
   375,100.89 : 517,642.68 = 222,147.78 : x
2. Step 2: Convert to fraction form
   375,100.89/517,642.68 = 222,147.78/x
3. Step 3: Cross multiply
   375,100.89x = 517,642.68 × 222,147.78
4. Step 4: Simplify right side
   375,100.89x = 114,993,169,607.04
5. Step 5: Solve for x
   x = 114,993,169,607.04/375,100.89
6. Step 6: Final answer
   x = 306,565.98