Finding the Fourth Proportional to 31,102.86, 42,922.82 and 19,005.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,102.86 : 42,922.82 = 19,005.31 : x
2. Step 2: Convert to fraction form
   31,102.86/42,922.82 = 19,005.31/x
3. Step 3: Cross multiply
   31,102.86x = 42,922.82 × 19,005.31
4. Step 4: Simplify right side
   31,102.86x = 815,761,500.17
5. Step 5: Solve for x
   x = 815,761,500.17/31,102.86
6. Step 6: Final answer
   x = 26,227.86