Finding the Fourth Proportional to 42,981.30, 64,433.07 and 15,272.82

Step by Step Solution

1. Step 1: Write the proportion equation
   42,981.30 : 64,433.07 = 15,272.82 : x
2. Step 2: Convert to fraction form
   42,981.30/64,433.07 = 15,272.82/x
3. Step 3: Cross multiply
   42,981.30x = 64,433.07 × 15,272.82
4. Step 4: Simplify right side
   42,981.30x = 984,074,680.16
5. Step 5: Solve for x
   x = 984,074,680.16/42,981.30
6. Step 6: Final answer
   x = 22,895.41