Finding the Fourth Proportional to 30,841.31, 42,568.99 and 20,112.93

Step by Step Solution

1. Step 1: Write the proportion equation
   30,841.31 : 42,568.99 = 20,112.93 : x
2. Step 2: Convert to fraction form
   30,841.31/42,568.99 = 20,112.93/x
3. Step 3: Cross multiply
   30,841.31x = 42,568.99 × 20,112.93
4. Step 4: Simplify right side
   30,841.31x = 856,187,116.04
5. Step 5: Solve for x
   x = 856,187,116.04/30,841.31
6. Step 6: Final answer
   x = 27,761.05