Finding the Fourth Proportional to 42,154.38, 63,212.85 and 22,428.78

Step by Step Solution

1. Step 1: Write the proportion equation
   42,154.38 : 63,212.85 = 22,428.78 : x
2. Step 2: Convert to fraction form
   42,154.38/63,212.85 = 22,428.78/x
3. Step 3: Cross multiply
   42,154.38x = 63,212.85 × 22,428.78
4. Step 4: Simplify right side
   42,154.38x = 1,417,787,105.82
5. Step 5: Solve for x
   x = 1,417,787,105.82/42,154.38
6. Step 6: Final answer
   x = 33,633.21