Finding the Fourth Proportional to 297,180.72, 443,430.69 and 279,099.72

Step by Step Solution

1. Step 1: Write the proportion equation
   297,180.72 : 443,430.69 = 279,099.72 : x
2. Step 2: Convert to fraction form
   297,180.72/443,430.69 = 279,099.72/x
3. Step 3: Cross multiply
   297,180.72x = 443,430.69 × 279,099.72
4. Step 4: Simplify right side
   297,180.72x = 123,761,381,418.41
5. Step 5: Solve for x
   x = 123,761,381,418.41/297,180.72
6. Step 6: Final answer
   x = 416,451.58