Finding the Fourth Proportional to 140,087.39, 193,312.72 and 79,672.73

Step by Step Solution

1. Step 1: Write the proportion equation
   140,087.39 : 193,312.72 = 79,672.73 : x
2. Step 2: Convert to fraction form
   140,087.39/193,312.72 = 79,672.73/x
3. Step 3: Cross multiply
   140,087.39x = 193,312.72 × 79,672.73
4. Step 4: Simplify right side
   140,087.39x = 15,401,752,146.13
5. Step 5: Solve for x
   x = 15,401,752,146.13/140,087.39
6. Step 6: Final answer
   x = 109,943.89