Finding the Fourth Proportional to 42,892.36, 64,356.90 and 17,938.24

Step by Step Solution

1. Step 1: Write the proportion equation
   42,892.36 : 64,356.90 = 17,938.24 : x
2. Step 2: Convert to fraction form
   42,892.36/64,356.90 = 17,938.24/x
3. Step 3: Cross multiply
   42,892.36x = 64,356.90 × 17,938.24
4. Step 4: Simplify right side
   42,892.36x = 1,154,449,517.86
5. Step 5: Solve for x
   x = 1,154,449,517.86/42,892.36
6. Step 6: Final answer
   x = 26,915.04