Finding the Fourth Proportional to 59,578.07, 89,343.73 and 21,618.32

Step by Step Solution

1. Step 1: Write the proportion equation
   59,578.07 : 89,343.73 = 21,618.32 : x
2. Step 2: Convert to fraction form
   59,578.07/89,343.73 = 21,618.32/x
3. Step 3: Cross multiply
   59,578.07x = 89,343.73 × 21,618.32
4. Step 4: Simplify right side
   59,578.07x = 1,931,460,790.32
5. Step 5: Solve for x
   x = 1,931,460,790.32/59,578.07
6. Step 6: Final answer
   x = 32,418.99