Finding the Fourth Proportional to 79,085.31, 109,139.49 and 43,275.30

Step by Step Solution

1. Step 1: Write the proportion equation
   79,085.31 : 109,139.49 = 43,275.30 : x
2. Step 2: Convert to fraction form
   79,085.31/109,139.49 = 43,275.30/x
3. Step 3: Cross multiply
   79,085.31x = 109,139.49 × 43,275.30
4. Step 4: Simplify right side
   79,085.31x = 4,723,044,171.60
5. Step 5: Solve for x
   x = 4,723,044,171.60/79,085.31
6. Step 6: Final answer
   x = 59,720.88