Finding the Fourth Proportional to 115,064.50, 158,707.21 and 76,804.76

Step by Step Solution

1. Step 1: Write the proportion equation
   115,064.50 : 158,707.21 = 76,804.76 : x
2. Step 2: Convert to fraction form
   115,064.50/158,707.21 = 76,804.76/x
3. Step 3: Cross multiply
   115,064.50x = 158,707.21 × 76,804.76
4. Step 4: Simplify right side
   115,064.50x = 12,189,469,174.32
5. Step 5: Solve for x
   x = 12,189,469,174.32/115,064.50
6. Step 6: Final answer
   x = 105,935.97