Finding the Fourth Proportional to 140,769.72, 194,262.23 and 77,109.79

Step by Step Solution

1. Step 1: Write the proportion equation
   140,769.72 : 194,262.23 = 77,109.79 : x
2. Step 2: Convert to fraction form
   140,769.72/194,262.23 = 77,109.79/x
3. Step 3: Cross multiply
   140,769.72x = 194,262.23 × 77,109.79
4. Step 4: Simplify right side
   140,769.72x = 14,979,519,760.23
5. Step 5: Solve for x
   x = 14,979,519,760.23/140,769.72
6. Step 6: Final answer
   x = 106,411.52