Finding the Fourth Proportional to 71,443.62, 98,572.23 and 56,289.24

Step by Step Solution

1. Step 1: Write the proportion equation
   71,443.62 : 98,572.23 = 56,289.24 : x
2. Step 2: Convert to fraction form
   71,443.62/98,572.23 = 56,289.24/x
3. Step 3: Cross multiply
   71,443.62x = 98,572.23 × 56,289.24
4. Step 4: Simplify right side
   71,443.62x = 5,548,555,911.81
5. Step 5: Solve for x
   x = 5,548,555,911.81/71,443.62
6. Step 6: Final answer
   x = 77,663.42