Finding the Fourth Proportional to 42,719.56, 64,049.86 and 22,978.24

Step by Step Solution

1. Step 1: Write the proportion equation
   42,719.56 : 64,049.86 = 22,978.24 : x
2. Step 2: Convert to fraction form
   42,719.56/64,049.86 = 22,978.24/x
3. Step 3: Cross multiply
   42,719.56x = 64,049.86 × 22,978.24
4. Step 4: Simplify right side
   42,719.56x = 1,471,753,055.05
5. Step 5: Solve for x
   x = 1,471,753,055.05/42,719.56
6. Step 6: Final answer
   x = 34,451.50