Finding the Fourth Proportional to 90,441.37, 124,800.90 and 50,155

Step by Step Solution

1. Step 1: Write the proportion equation
   90,441.37 : 124,800.90 = 50,155 : x
2. Step 2: Convert to fraction form
   90,441.37/124,800.90 = 50,155/x
3. Step 3: Cross multiply
   90,441.37x = 124,800.90 × 50,155
4. Step 4: Simplify right side
   90,441.37x = 6,259,389,139.50
5. Step 5: Solve for x
   x = 6,259,389,139.50/90,441.37
6. Step 6: Final answer
   x = 69,209.36