Finding the Fourth Proportional to 31,297.78, 43,194.50 and 17,870.95

Step by Step Solution

1. Step 1: Write the proportion equation
   31,297.78 : 43,194.50 = 17,870.95 : x
2. Step 2: Convert to fraction form
   31,297.78/43,194.50 = 17,870.95/x
3. Step 3: Cross multiply
   31,297.78x = 43,194.50 × 17,870.95
4. Step 4: Simplify right side
   31,297.78x = 771,926,749.78
5. Step 5: Solve for x
   x = 771,926,749.78/31,297.78
6. Step 6: Final answer
   x = 24,663.95