Finding the Fourth Proportional to 35,315.25, 48,739.37 and 20,411.25

Step by Step Solution

1. Step 1: Write the proportion equation
   35,315.25 : 48,739.37 = 20,411.25 : x
2. Step 2: Convert to fraction form
   35,315.25/48,739.37 = 20,411.25/x
3. Step 3: Cross multiply
   35,315.25x = 48,739.37 × 20,411.25
4. Step 4: Simplify right side
   35,315.25x = 994,831,363.86
5. Step 5: Solve for x
   x = 994,831,363.86/35,315.25
6. Step 6: Final answer
   x = 28,170.02