Finding the Fourth Proportional to 117,082.72, 161,598 and 79,369.12

Step by Step Solution

1. Step 1: Write the proportion equation
   117,082.72 : 161,598 = 79,369.12 : x
2. Step 2: Convert to fraction form
   117,082.72/161,598 = 79,369.12/x
3. Step 3: Cross multiply
   117,082.72x = 161,598 × 79,369.12
4. Step 4: Simplify right side
   117,082.72x = 12,825,891,053.76
5. Step 5: Solve for x
   x = 12,825,891,053.76/117,082.72
6. Step 6: Final answer
   x = 109,545.55