Finding the Fourth Proportional to 71,821, 99,124.50 and 42,007.24

Step by Step Solution

1. Step 1: Write the proportion equation
   71,821 : 99,124.50 = 42,007.24 : x
2. Step 2: Convert to fraction form
   71,821/99,124.50 = 42,007.24/x
3. Step 3: Cross multiply
   71,821x = 99,124.50 × 42,007.24
4. Step 4: Simplify right side
   71,821x = 4,163,946,661.38
5. Step 5: Solve for x
   x = 4,163,946,661.38/71,821
6. Step 6: Final answer
   x = 57,976.73