Finding the Fourth Proportional to 43,780.61, 65,680.15 and 14,196.14

Step by Step Solution

1. Step 1: Write the proportion equation
   43,780.61 : 65,680.15 = 14,196.14 : x
2. Step 2: Convert to fraction form
   43,780.61/65,680.15 = 14,196.14/x
3. Step 3: Cross multiply
   43,780.61x = 65,680.15 × 14,196.14
4. Step 4: Simplify right side
   43,780.61x = 932,404,604.62
5. Step 5: Solve for x
   x = 932,404,604.62/43,780.61
6. Step 6: Final answer
   x = 21,297.20