Finding the Fourth Proportional to 140,818.50, 194,329.53 and 77,158.71

Step by Step Solution

1. Step 1: Write the proportion equation
   140,818.50 : 194,329.53 = 77,158.71 : x
2. Step 2: Convert to fraction form
   140,818.50/194,329.53 = 77,158.71/x
3. Step 3: Cross multiply
   140,818.50x = 194,329.53 × 77,158.71
4. Step 4: Simplify right side
   140,818.50x = 14,994,215,849.71
5. Step 5: Solve for x
   x = 14,994,215,849.71/140,818.50
6. Step 6: Final answer
   x = 106,479.02