Finding the Fourth Proportional to 71,726.72, 98,987.82 and 39,898.58

Step by Step Solution

1. Step 1: Write the proportion equation
   71,726.72 : 98,987.82 = 39,898.58 : x
2. Step 2: Convert to fraction form
   71,726.72/98,987.82 = 39,898.58/x
3. Step 3: Cross multiply
   71,726.72x = 98,987.82 × 39,898.58
4. Step 4: Simplify right side
   71,726.72x = 3,949,473,455.30
5. Step 5: Solve for x
   x = 3,949,473,455.30/71,726.72
6. Step 6: Final answer
   x = 55,062.79