Finding the Fourth Proportional to 103,856.17, 155,810.52 and 28,976.28

Step by Step Solution

1. Step 1: Write the proportion equation
   103,856.17 : 155,810.52 = 28,976.28 : x
2. Step 2: Convert to fraction form
   103,856.17/155,810.52 = 28,976.28/x
3. Step 3: Cross multiply
   103,856.17x = 155,810.52 × 28,976.28
4. Step 4: Simplify right side
   103,856.17x = 4,514,809,109.58
5. Step 5: Solve for x
   x = 4,514,809,109.58/103,856.17
6. Step 6: Final answer
   x = 43,471.75