Finding the Fourth Proportional to 140,749.48, 194,237.49 and 77,086.72

Step by Step Solution

1. Step 1: Write the proportion equation
   140,749.48 : 194,237.49 = 77,086.72 : x
2. Step 2: Convert to fraction form
   140,749.48/194,237.49 = 77,086.72/x
3. Step 3: Cross multiply
   140,749.48x = 194,237.49 × 77,086.72
4. Step 4: Simplify right side
   140,749.48x = 14,973,131,005.13
5. Step 5: Solve for x
   x = 14,973,131,005.13/140,749.48
6. Step 6: Final answer
   x = 106,381.43