Finding the Fourth Proportional to 42,903.63, 64,333.47 and 17,936.85

Step by Step Solution

1. Step 1: Write the proportion equation
   42,903.63 : 64,333.47 = 17,936.85 : x
2. Step 2: Convert to fraction form
   42,903.63/64,333.47 = 17,936.85/x
3. Step 3: Cross multiply
   42,903.63x = 64,333.47 × 17,936.85
4. Step 4: Simplify right side
   42,903.63x = 1,153,939,801.37
5. Step 5: Solve for x
   x = 1,153,939,801.37/42,903.63
6. Step 6: Final answer
   x = 26,896.09