Finding the Fourth Proportional to 42,839.76, 64,249.29 and 16,527.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,839.76 : 64,249.29 = 16,527.72 : x
2. Step 2: Convert to fraction form
   42,839.76/64,249.29 = 16,527.72/x
3. Step 3: Cross multiply
   42,839.76x = 64,249.29 × 16,527.72
4. Step 4: Simplify right side
   42,839.76x = 1,061,894,275.32
5. Step 5: Solve for x
   x = 1,061,894,275.32/42,839.76
6. Step 6: Final answer
   x = 24,787.59