Finding the Fourth Proportional to 524,460.30, 723,568.59 and 309,492.78

Step by Step Solution

1. Step 1: Write the proportion equation
   524,460.30 : 723,568.59 = 309,492.78 : x
2. Step 2: Convert to fraction form
   524,460.30/723,568.59 = 309,492.78/x
3. Step 3: Cross multiply
   524,460.30x = 723,568.59 × 309,492.78
4. Step 4: Simplify right side
   524,460.30x = 223,939,254,439.78
5. Step 5: Solve for x
   x = 223,939,254,439.78/524,460.30
6. Step 6: Final answer
   x = 426,989.91