Finding the Fourth Proportional to 162,374,481.45, 223,860,016.17 and 128,994,714.72

Step by Step Solution

1. Step 1: Write the proportion equation
   162,374,481.45 : 223,860,016.17 = 128,994,714.72 : x
2. Step 2: Convert to fraction form
   162,374,481.45/223,860,016.17 = 128,994,714.72/x
3. Step 3: Cross multiply
   162,374,481.45x = 223,860,016.17 × 128,994,714.72
4. Step 4: Simplify right side
   162,374,481.45x = 28,876,758,923,063,736
5. Step 5: Solve for x
   x = 28,876,758,923,063,736/162,374,481.45
6. Step 6: Final answer
   x = 177,840,499.72