Finding the Fourth Proportional to 31,598.75, 47,258.69 and 28,113.21

Step by Step Solution

1. Step 1: Write the proportion equation
   31,598.75 : 47,258.69 = 28,113.21 : x
2. Step 2: Convert to fraction form
   31,598.75/47,258.69 = 28,113.21/x
3. Step 3: Cross multiply
   31,598.75x = 47,258.69 × 28,113.21
4. Step 4: Simplify right side
   31,598.75x = 1,328,593,664.72
5. Step 5: Solve for x
   x = 1,328,593,664.72/31,598.75
6. Step 6: Final answer
   x = 42,045.77