Finding the Fourth Proportional to 90,015.50, 124,221.39 and 50,271.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,015.50 : 124,221.39 = 50,271.50 : x
2. Step 2: Convert to fraction form
   90,015.50/124,221.39 = 50,271.50/x
3. Step 3: Cross multiply
   90,015.50x = 124,221.39 × 50,271.50
4. Step 4: Simplify right side
   90,015.50x = 6,244,795,607.39
5. Step 5: Solve for x
   x = 6,244,795,607.39/90,015.50
6. Step 6: Final answer
   x = 69,374.67