Finding the Fourth Proportional to 42,935.52, 64,380.24 and 19,541.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42,935.52 : 64,380.24 = 19,541.28 : x
2. Step 2: Convert to fraction form
   42,935.52/64,380.24 = 19,541.28/x
3. Step 3: Cross multiply
   42,935.52x = 64,380.24 × 19,541.28
4. Step 4: Simplify right side
   42,935.52x = 1,258,072,296.31
5. Step 5: Solve for x
   x = 1,258,072,296.31/42,935.52
6. Step 6: Final answer
   x = 29,301.43