Finding the Fourth Proportional to 31,085.40, 42,900.93 and 17,657.49

Step by Step Solution

1. Step 1: Write the proportion equation
   31,085.40 : 42,900.93 = 17,657.49 : x
2. Step 2: Convert to fraction form
   31,085.40/42,900.93 = 17,657.49/x
3. Step 3: Cross multiply
   31,085.40x = 42,900.93 × 17,657.49
4. Step 4: Simplify right side
   31,085.40x = 757,522,742.47
5. Step 5: Solve for x
   x = 757,522,742.47/31,085.40
6. Step 6: Final answer
   x = 24,369.08