Finding the Fourth Proportional to 31,608.42, 43,627.59 and 20,848.38

Step by Step Solution

1. Step 1: Write the proportion equation
   31,608.42 : 43,627.59 = 20,848.38 : x
2. Step 2: Convert to fraction form
   31,608.42/43,627.59 = 20,848.38/x
3. Step 3: Cross multiply
   31,608.42x = 43,627.59 × 20,848.38
4. Step 4: Simplify right side
   31,608.42x = 909,564,574.80
5. Step 5: Solve for x
   x = 909,564,574.80/31,608.42
6. Step 6: Final answer
   x = 28,776.02