Finding the Fourth Proportional to 379,914.38, 521,536.43 and 326,105.98

Step by Step Solution

1. Step 1: Write the proportion equation
   379,914.38 : 521,536.43 = 326,105.98 : x
2. Step 2: Convert to fraction form
   379,914.38/521,536.43 = 326,105.98/x
3. Step 3: Cross multiply
   379,914.38x = 521,536.43 × 326,105.98
4. Step 4: Simplify right side
   379,914.38x = 170,076,148,610.85
5. Step 5: Solve for x
   x = 170,076,148,610.85/379,914.38
6. Step 6: Final answer
   x = 447,669.68