Finding the Fourth Proportional to 140,111.12, 193,357.61 and 79,690.46

Step by Step Solution

1. Step 1: Write the proportion equation
   140,111.12 : 193,357.61 = 79,690.46 : x
2. Step 2: Convert to fraction form
   140,111.12/193,357.61 = 79,690.46/x
3. Step 3: Cross multiply
   140,111.12x = 193,357.61 × 79,690.46
4. Step 4: Simplify right side
   140,111.12x = 15,408,756,138.69
5. Step 5: Solve for x
   x = 15,408,756,138.69/140,111.12
6. Step 6: Final answer
   x = 109,975.26