Finding the Fourth Proportional to 117,328.10, 175,990.05 and 28,581.39

Step by Step Solution

1. Step 1: Write the proportion equation
   117,328.10 : 175,990.05 = 28,581.39 : x
2. Step 2: Convert to fraction form
   117,328.10/175,990.05 = 28,581.39/x
3. Step 3: Cross multiply
   117,328.10x = 175,990.05 × 28,581.39
4. Step 4: Simplify right side
   117,328.10x = 5,030,040,255.17
5. Step 5: Solve for x
   x = 5,030,040,255.17/117,328.10
6. Step 6: Final answer
   x = 42,871.58