Finding the Fourth Proportional to 140,390.91, 193,748.82 and 79,152.21

Step by Step Solution

1. Step 1: Write the proportion equation
   140,390.91 : 193,748.82 = 79,152.21 : x
2. Step 2: Convert to fraction form
   140,390.91/193,748.82 = 79,152.21/x
3. Step 3: Cross multiply
   140,390.91x = 193,748.82 × 79,152.21
4. Step 4: Simplify right side
   140,390.91x = 15,335,647,287.89
5. Step 5: Solve for x
   x = 15,335,647,287.89/140,390.91
6. Step 6: Final answer
   x = 109,235.33