Finding the Fourth Proportional to 89,459.12, 123,323.48 and 62,518

Step by Step Solution

1. Step 1: Write the proportion equation
   89,459.12 : 123,323.48 = 62,518 : x
2. Step 2: Convert to fraction form
   89,459.12/123,323.48 = 62,518/x
3. Step 3: Cross multiply
   89,459.12x = 123,323.48 × 62,518
4. Step 4: Simplify right side
   89,459.12x = 7,709,937,322.64
5. Step 5: Solve for x
   x = 7,709,937,322.64/89,459.12
6. Step 6: Final answer
   x = 86,183.92