Finding the Fourth Proportional to 79,689.64, 109,967.58 and 43,872.72

Step by Step Solution

1. Step 1: Write the proportion equation
   79,689.64 : 109,967.58 = 43,872.72 : x
2. Step 2: Convert to fraction form
   79,689.64/109,967.58 = 43,872.72/x
3. Step 3: Cross multiply
   79,689.64x = 109,967.58 × 43,872.72
4. Step 4: Simplify right side
   79,689.64x = 4,824,576,846.42
5. Step 5: Solve for x
   x = 4,824,576,846.42/79,689.64
6. Step 6: Final answer
   x = 60,542.08