Finding the Fourth Proportional to 31,407, 43,339.10 and 17,975.18

Step by Step Solution

1. Step 1: Write the proportion equation
   31,407 : 43,339.10 = 17,975.18 : x
2. Step 2: Convert to fraction form
   31,407/43,339.10 = 17,975.18/x
3. Step 3: Cross multiply
   31,407x = 43,339.10 × 17,975.18
4. Step 4: Simplify right side
   31,407x = 779,028,123.54
5. Step 5: Solve for x
   x = 779,028,123.54/31,407
6. Step 6: Final answer
   x = 24,804.28