Finding the Fourth Proportional to 42,799.41, 64,214.34 and 19,104.81

Step by Step Solution

1. Step 1: Write the proportion equation
   42,799.41 : 64,214.34 = 19,104.81 : x
2. Step 2: Convert to fraction form
   42,799.41/64,214.34 = 19,104.81/x
3. Step 3: Cross multiply
   42,799.41x = 64,214.34 × 19,104.81
4. Step 4: Simplify right side
   42,799.41x = 1,226,802,764.98
5. Step 5: Solve for x
   x = 1,226,802,764.98/42,799.41
6. Step 6: Final answer
   x = 28,664.01