Finding the Fourth Proportional to 41,221.96, 56,939.69 and 30,488.65

Step by Step Solution

1. Step 1: Write the proportion equation
   41,221.96 : 56,939.69 = 30,488.65 : x
2. Step 2: Convert to fraction form
   41,221.96/56,939.69 = 30,488.65/x
3. Step 3: Cross multiply
   41,221.96x = 56,939.69 × 30,488.65
4. Step 4: Simplify right side
   41,221.96x = 1,736,013,994.82
5. Step 5: Solve for x
   x = 1,736,013,994.82/41,221.96
6. Step 6: Final answer
   x = 42,113.82