Finding the Fourth Proportional to 165,429.50, 248,168.88 and 76,691.97

Step by Step Solution

1. Step 1: Write the proportion equation
   165,429.50 : 248,168.88 = 76,691.97 : x
2. Step 2: Convert to fraction form
   165,429.50/248,168.88 = 76,691.97/x
3. Step 3: Cross multiply
   165,429.50x = 248,168.88 × 76,691.97
4. Step 4: Simplify right side
   165,429.50x = 19,032,560,299.89
5. Step 5: Solve for x
   x = 19,032,560,299.89/165,429.50
6. Step 6: Final answer
   x = 115,049.38