Finding the Fourth Proportional to 42,728.16, 64,103.22 and 30,734.13

Step by Step Solution

1. Step 1: Write the proportion equation
   42,728.16 : 64,103.22 = 30,734.13 : x
2. Step 2: Convert to fraction form
   42,728.16/64,103.22 = 30,734.13/x
3. Step 3: Cross multiply
   42,728.16x = 64,103.22 × 30,734.13
4. Step 4: Simplify right side
   42,728.16x = 1,970,156,696.90
5. Step 5: Solve for x
   x = 1,970,156,696.90/42,728.16
6. Step 6: Final answer
   x = 46,109.09