Finding the Fourth Proportional to 43,385.43, 65,078.69 and 13,803.15

Step by Step Solution

1. Step 1: Write the proportion equation
   43,385.43 : 65,078.69 = 13,803.15 : x
2. Step 2: Convert to fraction form
   43,385.43/65,078.69 = 13,803.15/x
3. Step 3: Cross multiply
   43,385.43x = 65,078.69 × 13,803.15
4. Step 4: Simplify right side
   43,385.43x = 898,290,850.86
5. Step 5: Solve for x
   x = 898,290,850.86/43,385.43
6. Step 6: Final answer
   x = 20,704.90