Finding the Fourth Proportional to 42,734.00, 64,109.51 and 13,150.71

Step by Step Solution

1. Step 1: Write the proportion equation
   42,734.00 : 64,109.51 = 13,150.71 : x
2. Step 2: Convert to fraction form
   42,734.00/64,109.51 = 13,150.71/x
3. Step 3: Cross multiply
   42,734.00x = 64,109.51 × 13,150.71
4. Step 4: Simplify right side
   42,734.00x = 843,085,508.50
5. Step 5: Solve for x
   x = 843,085,508.50/42,734.00
6. Step 6: Final answer
   x = 19,728.68