Finding the Fourth Proportional to 67,941.69, 101,879.73 and 28,488.21

Step by Step Solution

1. Step 1: Write the proportion equation
   67,941.69 : 101,879.73 = 28,488.21 : x
2. Step 2: Convert to fraction form
   67,941.69/101,879.73 = 28,488.21/x
3. Step 3: Cross multiply
   67,941.69x = 101,879.73 × 28,488.21
4. Step 4: Simplify right side
   67,941.69x = 2,902,371,142.98
5. Step 5: Solve for x
   x = 2,902,371,142.98/67,941.69
6. Step 6: Final answer
   x = 42,718.56