Finding the Fourth Proportional to 79,359.32, 109,485.99 and 50,680.05

Step by Step Solution

1. Step 1: Write the proportion equation
   79,359.32 : 109,485.99 = 50,680.05 : x
2. Step 2: Convert to fraction form
   79,359.32/109,485.99 = 50,680.05/x
3. Step 3: Cross multiply
   79,359.32x = 109,485.99 × 50,680.05
4. Step 4: Simplify right side
   79,359.32x = 5,548,755,447.50
5. Step 5: Solve for x
   x = 5,548,755,447.50/79,359.32
6. Step 6: Final answer
   x = 69,919.40