Finding the Fourth Proportional to 31,031.78, 42,816.57 and 17,599.94

Step by Step Solution

1. Step 1: Write the proportion equation
   31,031.78 : 42,816.57 = 17,599.94 : x
2. Step 2: Convert to fraction form
   31,031.78/42,816.57 = 17,599.94/x
3. Step 3: Cross multiply
   31,031.78x = 42,816.57 × 17,599.94
4. Step 4: Simplify right side
   31,031.78x = 753,569,063.01
5. Step 5: Solve for x
   x = 753,569,063.01/31,031.78
6. Step 6: Final answer
   x = 24,283.78