Finding the Fourth Proportional to 45,411.86, 68,128.17 and 13,826.42

Step by Step Solution

1. Step 1: Write the proportion equation
   45,411.86 : 68,128.17 = 13,826.42 : x
2. Step 2: Convert to fraction form
   45,411.86/68,128.17 = 13,826.42/x
3. Step 3: Cross multiply
   45,411.86x = 68,128.17 × 13,826.42
4. Step 4: Simplify right side
   45,411.86x = 941,968,692.25
5. Step 5: Solve for x
   x = 941,968,692.25/45,411.86
6. Step 6: Final answer
   x = 20,742.79