Finding the Fourth Proportional to 140,102.69, 193,340.72 and 79,673.31

Step by Step Solution

1. Step 1: Write the proportion equation
   140,102.69 : 193,340.72 = 79,673.31 : x
2. Step 2: Convert to fraction form
   140,102.69/193,340.72 = 79,673.31/x
3. Step 3: Cross multiply
   140,102.69x = 193,340.72 × 79,673.31
4. Step 4: Simplify right side
   140,102.69x = 15,404,095,319.37
5. Step 5: Solve for x
   x = 15,404,095,319.37/140,102.69
6. Step 6: Final answer
   x = 109,948.61