Finding the Fourth Proportional to 79,139, 118,707.15 and 19,974.24

Step by Step Solution

1. Step 1: Write the proportion equation
   79,139 : 118,707.15 = 19,974.24 : x
2. Step 2: Convert to fraction form
   79,139/118,707.15 = 19,974.24/x
3. Step 3: Cross multiply
   79,139x = 118,707.15 × 19,974.24
4. Step 4: Simplify right side
   79,139x = 2,371,085,103.82
5. Step 5: Solve for x
   x = 2,371,085,103.82/79,139
6. Step 6: Final answer
   x = 29,961.02