Finding the Fourth Proportional to 258,476.00, 387,714.20 and 80,996.83

Step by Step Solution

1. Step 1: Write the proportion equation
   258,476.00 : 387,714.20 = 80,996.83 : x
2. Step 2: Convert to fraction form
   258,476.00/387,714.20 = 80,996.83/x
3. Step 3: Cross multiply
   258,476.00x = 387,714.20 × 80,996.83
4. Step 4: Simplify right side
   258,476.00x = 31,403,619,771.72
5. Step 5: Solve for x
   x = 31,403,619,771.72/258,476.00
6. Step 6: Final answer
   x = 121,495.30