Finding the Fourth Proportional to 31,096.64, 42,920.28 and 19,763.93

Step by Step Solution

1. Step 1: Write the proportion equation
   31,096.64 : 42,920.28 = 19,763.93 : x
2. Step 2: Convert to fraction form
   31,096.64/42,920.28 = 19,763.93/x
3. Step 3: Cross multiply
   31,096.64x = 42,920.28 × 19,763.93
4. Step 4: Simplify right side
   31,096.64x = 848,273,194.90
5. Step 5: Solve for x
   x = 848,273,194.90/31,096.64
6. Step 6: Final answer
   x = 27,278.62