Finding the Fourth Proportional to 57,645.72, 79,229.00 and 50,890.32

Step by Step Solution

1. Step 1: Write the proportion equation
   57,645.72 : 79,229.00 = 50,890.32 : x
2. Step 2: Convert to fraction form
   57,645.72/79,229.00 = 50,890.32/x
3. Step 3: Cross multiply
   57,645.72x = 79,229.00 × 50,890.32
4. Step 4: Simplify right side
   57,645.72x = 4,031,988,908.83
5. Step 5: Solve for x
   x = 4,031,988,908.83/57,645.72
6. Step 6: Final answer
   x = 69,944.29