Finding the Fourth Proportional to 31,093.89, 42,916.49 and 19,761.18

Step by Step Solution

1. Step 1: Write the proportion equation
   31,093.89 : 42,916.49 = 19,761.18 : x
2. Step 2: Convert to fraction form
   31,093.89/42,916.49 = 19,761.18/x
3. Step 3: Cross multiply
   31,093.89x = 42,916.49 × 19,761.18
4. Step 4: Simplify right side
   31,093.89x = 848,080,483.86
5. Step 5: Solve for x
   x = 848,080,483.86/31,093.89
6. Step 6: Final answer
   x = 27,274.83