Finding the Fourth Proportional to 31,086.09, 42,599.85 and 28,096.65

Step by Step Solution

1. Step 1: Write the proportion equation
   31,086.09 : 42,599.85 = 28,096.65 : x
2. Step 2: Convert to fraction form
   31,086.09/42,599.85 = 28,096.65/x
3. Step 3: Cross multiply
   31,086.09x = 42,599.85 × 28,096.65
4. Step 4: Simplify right side
   31,086.09x = 1,196,913,075.50
5. Step 5: Solve for x
   x = 1,196,913,075.50/31,086.09
6. Step 6: Final answer
   x = 38,503.17