Finding the Fourth Proportional to 50,709.60, 69,978.24 and 31,579.74

Step by Step Solution

1. Step 1: Write the proportion equation
   50,709.60 : 69,978.24 = 31,579.74 : x
2. Step 2: Convert to fraction form
   50,709.60/69,978.24 = 31,579.74/x
3. Step 3: Cross multiply
   50,709.60x = 69,978.24 × 31,579.74
4. Step 4: Simplify right side
   50,709.60x = 2,209,894,624.86
5. Step 5: Solve for x
   x = 2,209,894,624.86/50,709.60
6. Step 6: Final answer
   x = 43,579.41