Finding the Fourth Proportional to 42,724.06, 64,093.38 and 13,141.24

Step by Step Solution

1. Step 1: Write the proportion equation
   42,724.06 : 64,093.38 = 13,141.24 : x
2. Step 2: Convert to fraction form
   42,724.06/64,093.38 = 13,141.24/x
3. Step 3: Cross multiply
   42,724.06x = 64,093.38 × 13,141.24
4. Step 4: Simplify right side
   42,724.06x = 842,266,279.48
5. Step 5: Solve for x
   x = 842,266,279.48/42,724.06
6. Step 6: Final answer
   x = 19,714.10