Finding the Fourth Proportional to 72,582, 108,879.88 and 28,212.16

Step by Step Solution

1. Step 1: Write the proportion equation
   72,582 : 108,879.88 = 28,212.16 : x
2. Step 2: Convert to fraction form
   72,582/108,879.88 = 28,212.16/x
3. Step 3: Cross multiply
   72,582x = 108,879.88 × 28,212.16
4. Step 4: Simplify right side
   72,582x = 3,071,736,595.34
5. Step 5: Solve for x
   x = 3,071,736,595.34/72,582
6. Step 6: Final answer
   x = 42,320.91