Finding the Fourth Proportional to 83,714.78, 115,556.73 and 55,429.58

Step by Step Solution

1. Step 1: Write the proportion equation
   83,714.78 : 115,556.73 = 55,429.58 : x
2. Step 2: Convert to fraction form
   83,714.78/115,556.73 = 55,429.58/x
3. Step 3: Cross multiply
   83,714.78x = 115,556.73 × 55,429.58
4. Step 4: Simplify right side
   83,714.78x = 6,405,261,091.10
5. Step 5: Solve for x
   x = 6,405,261,091.10/83,714.78
6. Step 6: Final answer
   x = 76,512.90