Finding the Fourth Proportional to 43,980.72, 65,946.51 and 14,390.61

Step by Step Solution

1. Step 1: Write the proportion equation
   43,980.72 : 65,946.51 = 14,390.61 : x
2. Step 2: Convert to fraction form
   43,980.72/65,946.51 = 14,390.61/x
3. Step 3: Cross multiply
   43,980.72x = 65,946.51 × 14,390.61
4. Step 4: Simplify right side
   43,980.72x = 949,010,506.27
5. Step 5: Solve for x
   x = 949,010,506.27/43,980.72
6. Step 6: Final answer
   x = 21,577.88