Finding the Fourth Proportional to 50,411.63, 75,611.69 and 13,478.51

Step by Step Solution

1. Step 1: Write the proportion equation
   50,411.63 : 75,611.69 = 13,478.51 : x
2. Step 2: Convert to fraction form
   50,411.63/75,611.69 = 13,478.51/x
3. Step 3: Cross multiply
   50,411.63x = 75,611.69 × 13,478.51
4. Step 4: Simplify right side
   50,411.63x = 1,019,132,852.39
5. Step 5: Solve for x
   x = 1,019,132,852.39/50,411.63
6. Step 6: Final answer
   x = 20,216.22