Finding the Fourth Proportional to 424,892,429.10, 586,337,801.28 and 243,869,206.50

Step by Step Solution

1. Step 1: Write the proportion equation
   424,892,429.10 : 586,337,801.28 = 243,869,206.50 : x
2. Step 2: Convert to fraction form
   424,892,429.10/586,337,801.28 = 243,869,206.50/x
3. Step 3: Cross multiply
   424,892,429.10x = 586,337,801.28 × 243,869,206.50
4. Step 4: Simplify right side
   424,892,429.10x = 142,989,734,339,108,272
5. Step 5: Solve for x
   x = 142,989,734,339,108,272/424,892,429.10
6. Step 6: Final answer
   x = 336,531,612.58