Finding the Fourth Proportional to 343,074.34, 472,463.85 and 308,790.82

Step by Step Solution

1. Step 1: Write the proportion equation
   343,074.34 : 472,463.85 = 308,790.82 : x
2. Step 2: Convert to fraction form
   343,074.34/472,463.85 = 308,790.82/x
3. Step 3: Cross multiply
   343,074.34x = 472,463.85 × 308,790.82
4. Step 4: Simplify right side
   343,074.34x = 145,892,499,661.86
5. Step 5: Solve for x
   x = 145,892,499,661.86/343,074.34
6. Step 6: Final answer
   x = 425,250.40