Finding the Fourth Proportional to 30,649.57, 42,284.15 and 19,316.05

Step by Step Solution

1. Step 1: Write the proportion equation
   30,649.57 : 42,284.15 = 19,316.05 : x
2. Step 2: Convert to fraction form
   30,649.57/42,284.15 = 19,316.05/x
3. Step 3: Cross multiply
   30,649.57x = 42,284.15 × 19,316.05
4. Step 4: Simplify right side
   30,649.57x = 816,762,755.61
5. Step 5: Solve for x
   x = 816,762,755.61/30,649.57
6. Step 6: Final answer
   x = 26,648.42