Finding the Fourth Proportional to 31,066.77, 42,870.67 and 17,636.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,066.77 : 42,870.67 = 17,636.25 : x
2. Step 2: Convert to fraction form
   31,066.77/42,870.67 = 17,636.25/x
3. Step 3: Cross multiply
   31,066.77x = 42,870.67 × 17,636.25
4. Step 4: Simplify right side
   31,066.77x = 756,077,853.79
5. Step 5: Solve for x
   x = 756,077,853.79/31,066.77
6. Step 6: Final answer
   x = 24,337.19