Finding the Fourth Proportional to 456,513.48, 684,399.12 and 190,472.22

Step by Step Solution

1. Step 1: Write the proportion equation
   456,513.48 : 684,399.12 = 190,472.22 : x
2. Step 2: Convert to fraction form
   456,513.48/684,399.12 = 190,472.22/x
3. Step 3: Cross multiply
   456,513.48x = 684,399.12 × 190,472.22
4. Step 4: Simplify right side
   456,513.48x = 130,359,019,752.45
5. Step 5: Solve for x
   x = 130,359,019,752.45/456,513.48
6. Step 6: Final answer
   x = 285,553.50