Finding the Fourth Proportional to 71,589, 98,815.48 and 50,430.18

Step by Step Solution

1. Step 1: Write the proportion equation
   71,589 : 98,815.48 = 50,430.18 : x
2. Step 2: Convert to fraction form
   71,589/98,815.48 = 50,430.18/x
3. Step 3: Cross multiply
   71,589x = 98,815.48 × 50,430.18
4. Step 4: Simplify right side
   71,589x = 4,983,282,443.19
5. Step 5: Solve for x
   x = 4,983,282,443.19/71,589
6. Step 6: Final answer
   x = 69,609.61