Finding the Fourth Proportional to 73,215.16, 109,859.52 and 28,873.72

Step by Step Solution

1. Step 1: Write the proportion equation
   73,215.16 : 109,859.52 = 28,873.72 : x
2. Step 2: Convert to fraction form
   73,215.16/109,859.52 = 28,873.72/x
3. Step 3: Cross multiply
   73,215.16x = 109,859.52 × 28,873.72
4. Step 4: Simplify right side
   73,215.16x = 3,172,053,019.81
5. Step 5: Solve for x
   x = 3,172,053,019.81/73,215.16
6. Step 6: Final answer
   x = 43,325.08