Finding the Fourth Proportional to 42,873.52, 64,312.71 and 13,295.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,873.52 : 64,312.71 = 13,295.56 : x
2. Step 2: Convert to fraction form
   42,873.52/64,312.71 = 13,295.56/x
3. Step 3: Cross multiply
   42,873.52x = 64,312.71 × 13,295.56
4. Step 4: Simplify right side
   42,873.52x = 855,073,389.25
5. Step 5: Solve for x
   x = 855,073,389.25/42,873.52
6. Step 6: Final answer
   x = 19,944.09