Finding the Fourth Proportional to 89,217.58, 123,108.91 and 50,979.60

Step by Step Solution

1. Step 1: Write the proportion equation
   89,217.58 : 123,108.91 = 50,979.60 : x
2. Step 2: Convert to fraction form
   89,217.58/123,108.91 = 50,979.60/x
3. Step 3: Cross multiply
   89,217.58x = 123,108.91 × 50,979.60
4. Step 4: Simplify right side
   89,217.58x = 6,276,043,278.72
5. Step 5: Solve for x
   x = 6,276,043,278.72/89,217.58
6. Step 6: Final answer
   x = 70,345.37