Finding the Fourth Proportional to 128,162.72, 192,228.78 and 34,675.76

Step by Step Solution

1. Step 1: Write the proportion equation
   128,162.72 : 192,228.78 = 34,675.76 : x
2. Step 2: Convert to fraction form
   128,162.72/192,228.78 = 34,675.76/x
3. Step 3: Cross multiply
   128,162.72x = 192,228.78 × 34,675.76
4. Step 4: Simplify right side
   128,162.72x = 6,665,679,040.37
5. Step 5: Solve for x
   x = 6,665,679,040.37/128,162.72
6. Step 6: Final answer
   x = 52,009.50