Finding the Fourth Proportional to 79,687.72, 109,971.78 and 43,880.20

Step by Step Solution

1. Step 1: Write the proportion equation
   79,687.72 : 109,971.78 = 43,880.20 : x
2. Step 2: Convert to fraction form
   79,687.72/109,971.78 = 43,880.20/x
3. Step 3: Cross multiply
   79,687.72x = 109,971.78 × 43,880.20
4. Step 4: Simplify right side
   79,687.72x = 4,825,583,700.76
5. Step 5: Solve for x
   x = 4,825,583,700.76/79,687.72
6. Step 6: Final answer
   x = 60,556.18