Finding the Fourth Proportional to 81,973.72, 123,044.82 and 42,520.24

Step by Step Solution

1. Step 1: Write the proportion equation
   81,973.72 : 123,044.82 = 42,520.24 : x
2. Step 2: Convert to fraction form
   81,973.72/123,044.82 = 42,520.24/x
3. Step 3: Cross multiply
   81,973.72x = 123,044.82 × 42,520.24
4. Step 4: Simplify right side
   81,973.72x = 5,231,895,277.16
5. Step 5: Solve for x
   x = 5,231,895,277.16/81,973.72
6. Step 6: Final answer
   x = 63,824.06