Finding the Fourth Proportional to 31,097.82, 43,038.33 and 30,351.63

Step by Step Solution

1. Step 1: Write the proportion equation
   31,097.82 : 43,038.33 = 30,351.63 : x
2. Step 2: Convert to fraction form
   31,097.82/43,038.33 = 30,351.63/x
3. Step 3: Cross multiply
   31,097.82x = 43,038.33 × 30,351.63
4. Step 4: Simplify right side
   31,097.82x = 1,306,283,467.98
5. Step 5: Solve for x
   x = 1,306,283,467.98/31,097.82
6. Step 6: Final answer
   x = 42,005.63