Finding the Fourth Proportional to 31,761, 43,830.18 and 17,616.78

Step by Step Solution

1. Step 1: Write the proportion equation
   31,761 : 43,830.18 = 17,616.78 : x
2. Step 2: Convert to fraction form
   31,761/43,830.18 = 17,616.78/x
3. Step 3: Cross multiply
   31,761x = 43,830.18 × 17,616.78
4. Step 4: Simplify right side
   31,761x = 772,146,638.42
5. Step 5: Solve for x
   x = 772,146,638.42/31,761
6. Step 6: Final answer
   x = 24,311.16