Finding the Fourth Proportional to 140,958.72, 194,524.74 and 77,298.12

Step by Step Solution

1. Step 1: Write the proportion equation
   140,958.72 : 194,524.74 = 77,298.12 : x
2. Step 2: Convert to fraction form
   140,958.72/194,524.74 = 77,298.12/x
3. Step 3: Cross multiply
   140,958.72x = 194,524.74 × 77,298.12
4. Step 4: Simplify right side
   140,958.72x = 15,036,396,695.49
5. Step 5: Solve for x
   x = 15,036,396,695.49/140,958.72
6. Step 6: Final answer
   x = 106,672.34