Finding the Fourth Proportional to 42,943.78, 64,420.08 and 14,863.78

Step by Step Solution

1. Step 1: Write the proportion equation
   42,943.78 : 64,420.08 = 14,863.78 : x
2. Step 2: Convert to fraction form
   42,943.78/64,420.08 = 14,863.78/x
3. Step 3: Cross multiply
   42,943.78x = 64,420.08 × 14,863.78
4. Step 4: Simplify right side
   42,943.78x = 957,526,179.32
5. Step 5: Solve for x
   x = 957,526,179.32/42,943.78
6. Step 6: Final answer
   x = 22,297.20