Finding the Fourth Proportional to 128,995.50, 193,443.56 and 50,099.34

Step by Step Solution

1. Step 1: Write the proportion equation
   128,995.50 : 193,443.56 = 50,099.34 : x
2. Step 2: Convert to fraction form
   128,995.50/193,443.56 = 50,099.34/x
3. Step 3: Cross multiply
   128,995.50x = 193,443.56 × 50,099.34
4. Step 4: Simplify right side
   128,995.50x = 9,691,394,683.25
5. Step 5: Solve for x
   x = 9,691,394,683.25/128,995.50
6. Step 6: Final answer
   x = 75,129.71