Finding the Fourth Proportional to 42,493.41, 63,719.46 and 25,643.79

Step by Step Solution

1. Step 1: Write the proportion equation
   42,493.41 : 63,719.46 = 25,643.79 : x
2. Step 2: Convert to fraction form
   42,493.41/63,719.46 = 25,643.79/x
3. Step 3: Cross multiply
   42,493.41x = 63,719.46 × 25,643.79
4. Step 4: Simplify right side
   42,493.41x = 1,634,008,451.15
5. Step 5: Solve for x
   x = 1,634,008,451.15/42,493.41
6. Step 6: Final answer
   x = 38,453.22