Finding the Fourth Proportional to 140,127.18, 193,369.59 and 79,689.39

Step by Step Solution

1. Step 1: Write the proportion equation
   140,127.18 : 193,369.59 = 79,689.39 : x
2. Step 2: Convert to fraction form
   140,127.18/193,369.59 = 79,689.39/x
3. Step 3: Cross multiply
   140,127.18x = 193,369.59 × 79,689.39
4. Step 4: Simplify right side
   140,127.18x = 15,409,504,671.65
5. Step 5: Solve for x
   x = 15,409,504,671.65/140,127.18
6. Step 6: Final answer
   x = 109,967.99