Finding the Fourth Proportional to 309,636.86, 427,293.72 and 180,650.34

Step by Step Solution

1. Step 1: Write the proportion equation
   309,636.86 : 427,293.72 = 180,650.34 : x
2. Step 2: Convert to fraction form
   309,636.86/427,293.72 = 180,650.34/x
3. Step 3: Cross multiply
   309,636.86x = 427,293.72 × 180,650.34
4. Step 4: Simplify right side
   309,636.86x = 77,190,755,797.86
5. Step 5: Solve for x
   x = 77,190,755,797.86/309,636.86
6. Step 6: Final answer
   x = 249,294.47