Finding the Fourth Proportional to 31,131.98, 42,965.80 and 17,705.24

Step by Step Solution

1. Step 1: Write the proportion equation
   31,131.98 : 42,965.80 = 17,705.24 : x
2. Step 2: Convert to fraction form
   31,131.98/42,965.80 = 17,705.24/x
3. Step 3: Cross multiply
   31,131.98x = 42,965.80 × 17,705.24
4. Step 4: Simplify right side
   31,131.98x = 760,719,800.79
5. Step 5: Solve for x
   x = 760,719,800.79/31,131.98
6. Step 6: Final answer
   x = 24,435.32