Finding the Fourth Proportional to 31,127.63, 42,956.15 and 17,699.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,127.63 : 42,956.15 = 17,699.72 : x
2. Step 2: Convert to fraction form
   31,127.63/42,956.15 = 17,699.72/x
3. Step 3: Cross multiply
   31,127.63x = 42,956.15 × 17,699.72
4. Step 4: Simplify right side
   31,127.63x = 760,311,524.00
5. Step 5: Solve for x
   x = 760,311,524.00/31,127.63
6. Step 6: Final answer
   x = 24,425.62