Finding the Fourth Proportional to 140,404.69, 193,731.60 and 79,974.01

Step by Step Solution

1. Step 1: Write the proportion equation
   140,404.69 : 193,731.60 = 79,974.01 : x
2. Step 2: Convert to fraction form
   140,404.69/193,731.60 = 79,974.01/x
3. Step 3: Cross multiply
   140,404.69x = 193,731.60 × 79,974.01
4. Step 4: Simplify right side
   140,404.69x = 15,493,493,007.93
5. Step 5: Solve for x
   x = 15,493,493,007.93/140,404.69
6. Step 6: Final answer
   x = 110,348.83