Finding the Fourth Proportional to 108,394.53, 162,587.89 and 28,431.86

Step by Step Solution

1. Step 1: Write the proportion equation
   108,394.53 : 162,587.89 = 28,431.86 : x
2. Step 2: Convert to fraction form
   108,394.53/162,587.89 = 28,431.86/x
3. Step 3: Cross multiply
   108,394.53x = 162,587.89 × 28,431.86
4. Step 4: Simplify right side
   108,394.53x = 4,622,676,800.58
5. Step 5: Solve for x
   x = 4,622,676,800.58/108,394.53
6. Step 6: Final answer
   x = 42,646.77