Finding the Fourth Proportional to 51,863.69, 71,572.82 and 30,642.91

Step by Step Solution

1. Step 1: Write the proportion equation
   51,863.69 : 71,572.82 = 30,642.91 : x
2. Step 2: Convert to fraction form
   51,863.69/71,572.82 = 30,642.91/x
3. Step 3: Cross multiply
   51,863.69x = 71,572.82 × 30,642.91
4. Step 4: Simplify right side
   51,863.69x = 2,193,199,149.56
5. Step 5: Solve for x
   x = 2,193,199,149.56/51,863.69
6. Step 6: Final answer
   x = 42,287.76