Finding the Fourth Proportional to 140,109.94, 193,345.54 and 79,685.56

Step by Step Solution

1. Step 1: Write the proportion equation
   140,109.94 : 193,345.54 = 79,685.56 : x
2. Step 2: Convert to fraction form
   140,109.94/193,345.54 = 79,685.56/x
3. Step 3: Cross multiply
   140,109.94x = 193,345.54 × 79,685.56
4. Step 4: Simplify right side
   140,109.94x = 15,406,847,628.40
5. Step 5: Solve for x
   x = 15,406,847,628.40/140,109.94
6. Step 6: Final answer
   x = 109,962.56