Finding the Fourth Proportional to 447,592.92, 617,686.12 and 243,649.72

Step by Step Solution

1. Step 1: Write the proportion equation
   447,592.92 : 617,686.12 = 243,649.72 : x
2. Step 2: Convert to fraction form
   447,592.92/617,686.12 = 243,649.72/x
3. Step 3: Cross multiply
   447,592.92x = 617,686.12 × 243,649.72
4. Step 4: Simplify right side
   447,592.92x = 150,499,050,185.89
5. Step 5: Solve for x
   x = 150,499,050,185.89/447,592.92
6. Step 6: Final answer
   x = 336,240.91