Finding the Fourth Proportional to 79,160.23, 109,240.30 and 42,861.05

Step by Step Solution

1. Step 1: Write the proportion equation
   79,160.23 : 109,240.30 = 42,861.05 : x
2. Step 2: Convert to fraction form
   79,160.23/109,240.30 = 42,861.05/x
3. Step 3: Cross multiply
   79,160.23x = 109,240.30 × 42,861.05
4. Step 4: Simplify right side
   79,160.23x = 4,682,154,126.26
5. Step 5: Solve for x
   x = 4,682,154,126.26/79,160.23
6. Step 6: Final answer
   x = 59,147.81