Finding the Fourth Proportional to 377,538.37, 521,105.30 and 222,624.96

Step by Step Solution

1. Step 1: Write the proportion equation
   377,538.37 : 521,105.30 = 222,624.96 : x
2. Step 2: Convert to fraction form
   377,538.37/521,105.30 = 222,624.96/x
3. Step 3: Cross multiply
   377,538.37x = 521,105.30 × 222,624.96
4. Step 4: Simplify right side
   377,538.37x = 116,011,044,335.86
5. Step 5: Solve for x
   x = 116,011,044,335.86/377,538.37
6. Step 6: Final answer
   x = 307,282.79