Finding the Fourth Proportional to 42,733.92, 64,108.17 and 13,151.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,733.92 : 64,108.17 = 13,151.10 : x
2. Step 2: Convert to fraction form
   42,733.92/64,108.17 = 13,151.10/x
3. Step 3: Cross multiply
   42,733.92x = 64,108.17 × 13,151.10
4. Step 4: Simplify right side
   42,733.92x = 843,092,954.49
5. Step 5: Solve for x
   x = 843,092,954.49/42,733.92
6. Step 6: Final answer
   x = 19,728.89