Finding the Fourth Proportional to 50,530.59, 69,738.68 and 42,018.08

Step by Step Solution

1. Step 1: Write the proportion equation
   50,530.59 : 69,738.68 = 42,018.08 : x
2. Step 2: Convert to fraction form
   50,530.59/69,738.68 = 42,018.08/x
3. Step 3: Cross multiply
   50,530.59x = 69,738.68 × 42,018.08
4. Step 4: Simplify right side
   50,530.59x = 2,930,285,191.69
5. Step 5: Solve for x
   x = 2,930,285,191.69/50,530.59
6. Step 6: Final answer
   x = 57,990.32