Finding the Fourth Proportional to 79,940.16, 119,896.80 and 29,328.72

Step by Step Solution

1. Step 1: Write the proportion equation
   79,940.16 : 119,896.80 = 29,328.72 : x
2. Step 2: Convert to fraction form
   79,940.16/119,896.80 = 29,328.72/x
3. Step 3: Cross multiply
   79,940.16x = 119,896.80 × 29,328.72
4. Step 4: Simplify right side
   79,940.16x = 3,516,419,676.10
5. Step 5: Solve for x
   x = 3,516,419,676.10/79,940.16
6. Step 6: Final answer
   x = 43,988.15