Finding the Fourth Proportional to 42,933.60, 64,388.76 and 17,968.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,933.60 : 64,388.76 = 17,968.50 : x
2. Step 2: Convert to fraction form
   42,933.60/64,388.76 = 17,968.50/x
3. Step 3: Cross multiply
   42,933.60x = 64,388.76 × 17,968.50
4. Step 4: Simplify right side
   42,933.60x = 1,156,969,434.06
5. Step 5: Solve for x
   x = 1,156,969,434.06/42,933.60
6. Step 6: Final answer
   x = 26,947.88