Finding the Fourth Proportional to 72,873, 109,309.49 and 28,468.61

Step by Step Solution

1. Step 1: Write the proportion equation
   72,873 : 109,309.49 = 28,468.61 : x
2. Step 2: Convert to fraction form
   72,873/109,309.49 = 28,468.61/x
3. Step 3: Cross multiply
   72,873x = 109,309.49 × 28,468.61
4. Step 4: Simplify right side
   72,873x = 3,111,888,551.22
5. Step 5: Solve for x
   x = 3,111,888,551.22/72,873
6. Step 6: Final answer
   x = 42,702.90