Finding the Fourth Proportional to 113,137.05, 169,705.42 and 28,897.30

Step by Step Solution

1. Step 1: Write the proportion equation
   113,137.05 : 169,705.42 = 28,897.30 : x
2. Step 2: Convert to fraction form
   113,137.05/169,705.42 = 28,897.30/x
3. Step 3: Cross multiply
   113,137.05x = 169,705.42 × 28,897.30
4. Step 4: Simplify right side
   113,137.05x = 4,904,028,433.37
5. Step 5: Solve for x
   x = 4,904,028,433.37/113,137.05
6. Step 6: Final answer
   x = 43,345.91