Finding the Fourth Proportional to 79,446.88, 109,638.41 and 43,638.85

Step by Step Solution

1. Step 1: Write the proportion equation
   79,446.88 : 109,638.41 = 43,638.85 : x
2. Step 2: Convert to fraction form
   79,446.88/109,638.41 = 43,638.85/x
3. Step 3: Cross multiply
   79,446.88x = 109,638.41 × 43,638.85
4. Step 4: Simplify right side
   79,446.88x = 4,784,494,292.55
5. Step 5: Solve for x
   x = 4,784,494,292.55/79,446.88
6. Step 6: Final answer
   x = 60,222.56