Finding the Fourth Proportional to 42,834.72, 64,224.66 and 20,603.82

Step by Step Solution

1. Step 1: Write the proportion equation
   42,834.72 : 64,224.66 = 20,603.82 : x
2. Step 2: Convert to fraction form
   42,834.72/64,224.66 = 20,603.82/x
3. Step 3: Cross multiply
   42,834.72x = 64,224.66 × 20,603.82
4. Step 4: Simplify right side
   42,834.72x = 1,323,273,334.20
5. Step 5: Solve for x
   x = 1,323,273,334.20/42,834.72
6. Step 6: Final answer
   x = 30,892.54