Finding the Fourth Proportional to 112,624.38, 168,994.89 and 81,714.78

Step by Step Solution

1. Step 1: Write the proportion equation
   112,624.38 : 168,994.89 = 81,714.78 : x
2. Step 2: Convert to fraction form
   112,624.38/168,994.89 = 81,714.78/x
3. Step 3: Cross multiply
   112,624.38x = 168,994.89 × 81,714.78
4. Step 4: Simplify right side
   112,624.38x = 13,809,380,257.47
5. Step 5: Solve for x
   x = 13,809,380,257.47/112,624.38
6. Step 6: Final answer
   x = 122,614.48