Finding the Fourth Proportional to 42,945.14, 64,408.35 and 21,862.82

Step by Step Solution

1. Step 1: Write the proportion equation
   42,945.14 : 64,408.35 = 21,862.82 : x
2. Step 2: Convert to fraction form
   42,945.14/64,408.35 = 21,862.82/x
3. Step 3: Cross multiply
   42,945.14x = 64,408.35 × 21,862.82
4. Step 4: Simplify right side
   42,945.14x = 1,408,148,162.55
5. Step 5: Solve for x
   x = 1,408,148,162.55/42,945.14
6. Step 6: Final answer
   x = 32,789.46