Finding the Fourth Proportional to 140,767.40, 194,259.66 and 77,105

Step by Step Solution

1. Step 1: Write the proportion equation
   140,767.40 : 194,259.66 = 77,105 : x
2. Step 2: Convert to fraction form
   140,767.40/194,259.66 = 77,105/x
3. Step 3: Cross multiply
   140,767.40x = 194,259.66 × 77,105
4. Step 4: Simplify right side
   140,767.40x = 14,978,391,084.30
5. Step 5: Solve for x
   x = 14,978,391,084.30/140,767.40
6. Step 6: Final answer
   x = 106,405.25