Finding the Fourth Proportional to 31,166.37, 43,056.63 and 20,436.84

Step by Step Solution

1. Step 1: Write the proportion equation
   31,166.37 : 43,056.63 = 20,436.84 : x
2. Step 2: Convert to fraction form
   31,166.37/43,056.63 = 20,436.84/x
3. Step 3: Cross multiply
   31,166.37x = 43,056.63 × 20,436.84
4. Step 4: Simplify right side
   31,166.37x = 879,941,458.25
5. Step 5: Solve for x
   x = 879,941,458.25/31,166.37
6. Step 6: Final answer
   x = 28,233.68