Finding the Fourth Proportional to 120,051.37, 165,748.17 and 77,049.42

Step by Step Solution

1. Step 1: Write the proportion equation
   120,051.37 : 165,748.17 = 77,049.42 : x
2. Step 2: Convert to fraction form
   120,051.37/165,748.17 = 77,049.42/x
3. Step 3: Cross multiply
   120,051.37x = 165,748.17 × 77,049.42
4. Step 4: Simplify right side
   120,051.37x = 12,770,800,364.56
5. Step 5: Solve for x
   x = 12,770,800,364.56/120,051.37
6. Step 6: Final answer
   x = 106,377.80