Finding the Fourth Proportional to 129,806.72, 179,134.56 and 76,123.52

Step by Step Solution

1. Step 1: Write the proportion equation
   129,806.72 : 179,134.56 = 76,123.52 : x
2. Step 2: Convert to fraction form
   129,806.72/179,134.56 = 76,123.52/x
3. Step 3: Cross multiply
   129,806.72x = 179,134.56 × 76,123.52
4. Step 4: Simplify right side
   129,806.72x = 13,636,353,260.85
5. Step 5: Solve for x
   x = 13,636,353,260.85/129,806.72
6. Step 6: Final answer
   x = 105,051.21