Finding the Fourth Proportional to 42,894.81, 64,350.78 and 14,815.89

Step by Step Solution

1. Step 1: Write the proportion equation
   42,894.81 : 64,350.78 = 14,815.89 : x
2. Step 2: Convert to fraction form
   42,894.81/64,350.78 = 14,815.89/x
3. Step 3: Cross multiply
   42,894.81x = 64,350.78 × 14,815.89
4. Step 4: Simplify right side
   42,894.81x = 953,414,077.89
5. Step 5: Solve for x
   x = 953,414,077.89/42,894.81
6. Step 6: Final answer
   x = 22,226.79