Finding the Fourth Proportional to 79,390.43, 109,558.17 and 43,091.09

Step by Step Solution

1. Step 1: Write the proportion equation
   79,390.43 : 109,558.17 = 43,091.09 : x
2. Step 2: Convert to fraction form
   79,390.43/109,558.17 = 43,091.09/x
3. Step 3: Cross multiply
   79,390.43x = 109,558.17 × 43,091.09
4. Step 4: Simplify right side
   79,390.43x = 4,720,980,826.76
5. Step 5: Solve for x
   x = 4,720,980,826.76/79,390.43
6. Step 6: Final answer
   x = 59,465.37