Finding the Fourth Proportional to 297,328.32, 445,655.52 and 147,672.72

Step by Step Solution

1. Step 1: Write the proportion equation
   297,328.32 : 445,655.52 = 147,672.72 : x
2. Step 2: Convert to fraction form
   297,328.32/445,655.52 = 147,672.72/x
3. Step 3: Cross multiply
   297,328.32x = 445,655.52 × 147,672.72
4. Step 4: Simplify right side
   297,328.32x = 65,811,162,821.41
5. Step 5: Solve for x
   x = 65,811,162,821.41/297,328.32
6. Step 6: Final answer
   x = 221,341.72