Finding the Fourth Proportional to 73,112.76, 109,714.26 and 28,731.72

Step by Step Solution

1. Step 1: Write the proportion equation
   73,112.76 : 109,714.26 = 28,731.72 : x
2. Step 2: Convert to fraction form
   73,112.76/109,714.26 = 28,731.72/x
3. Step 3: Cross multiply
   73,112.76x = 109,714.26 × 28,731.72
4. Step 4: Simplify right side
   73,112.76x = 3,152,279,398.33
5. Step 5: Solve for x
   x = 3,152,279,398.33/73,112.76
6. Step 6: Final answer
   x = 43,115.31