Finding the Fourth Proportional to 73,005.17, 109,465.83 and 28,579.91

Step by Step Solution

1. Step 1: Write the proportion equation
   73,005.17 : 109,465.83 = 28,579.91 : x
2. Step 2: Convert to fraction form
   73,005.17/109,465.83 = 28,579.91/x
3. Step 3: Cross multiply
   73,005.17x = 109,465.83 × 28,579.91
4. Step 4: Simplify right side
   73,005.17x = 3,128,523,022.15
5. Step 5: Solve for x
   x = 3,128,523,022.15/73,005.17
6. Step 6: Final answer
   x = 42,853.45