Finding the Fourth Proportional to 140,401.06, 193,750.61 and 76,739.31

Step by Step Solution

1. Step 1: Write the proportion equation
   140,401.06 : 193,750.61 = 76,739.31 : x
2. Step 2: Convert to fraction form
   140,401.06/193,750.61 = 76,739.31/x
3. Step 3: Cross multiply
   140,401.06x = 193,750.61 × 76,739.31
4. Step 4: Simplify right side
   140,401.06x = 14,868,287,739.78
5. Step 5: Solve for x
   x = 14,868,287,739.78/140,401.06
6. Step 6: Final answer
   x = 105,898.69