Finding the Fourth Proportional to 140,642.82, 194,087.16 and 76,980.96

Step by Step Solution

1. Step 1: Write the proportion equation
   140,642.82 : 194,087.16 = 76,980.96 : x
2. Step 2: Convert to fraction form
   140,642.82/194,087.16 = 76,980.96/x
3. Step 3: Cross multiply
   140,642.82x = 194,087.16 × 76,980.96
4. Step 4: Simplify right side
   140,642.82x = 14,941,015,900.47
5. Step 5: Solve for x
   x = 14,941,015,900.47/140,642.82
6. Step 6: Final answer
   x = 106,233.76