Finding the Fourth Proportional to 79,121.10, 109,188.41 and 43,310.50

Step by Step Solution

1. Step 1: Write the proportion equation
   79,121.10 : 109,188.41 = 43,310.50 : x
2. Step 2: Convert to fraction form
   79,121.10/109,188.41 = 43,310.50/x
3. Step 3: Cross multiply
   79,121.10x = 109,188.41 × 43,310.50
4. Step 4: Simplify right side
   79,121.10x = 4,729,004,141.78
5. Step 5: Solve for x
   x = 4,729,004,141.78/79,121.10
6. Step 6: Final answer
   x = 59,769.19