Finding the Fourth Proportional to 31,065.60, 42,874.32 and 17,641.08

Step by Step Solution

1. Step 1: Write the proportion equation
   31,065.60 : 42,874.32 = 17,641.08 : x
2. Step 2: Convert to fraction form
   31,065.60/42,874.32 = 17,641.08/x
3. Step 3: Cross multiply
   31,065.60x = 42,874.32 × 17,641.08
4. Step 4: Simplify right side
   31,065.60x = 756,349,309.07
5. Step 5: Solve for x
   x = 756,349,309.07/31,065.60
6. Step 6: Final answer
   x = 24,346.84