Finding the Fourth Proportional to 102,667.20, 154,087.20 and 50,121.60

Step by Step Solution

1. Step 1: Write the proportion equation
   102,667.20 : 154,087.20 = 50,121.60 : x
2. Step 2: Convert to fraction form
   102,667.20/154,087.20 = 50,121.60/x
3. Step 3: Cross multiply
   102,667.20x = 154,087.20 × 50,121.60
4. Step 4: Simplify right side
   102,667.20x = 7,723,097,003.52
5. Step 5: Solve for x
   x = 7,723,097,003.52/102,667.20
6. Step 6: Final answer
   x = 75,224.58