Finding the Fourth Proportional to 42,969.56, 64,378.08 and 17,954.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,969.56 : 64,378.08 = 17,954.56 : x
2. Step 2: Convert to fraction form
   42,969.56/64,378.08 = 17,954.56/x
3. Step 3: Cross multiply
   42,969.56x = 64,378.08 × 17,954.56
4. Step 4: Simplify right side
   42,969.56x = 1,155,880,100.04
5. Step 5: Solve for x
   x = 1,155,880,100.04/42,969.56
6. Step 6: Final answer
   x = 26,899.98