Finding the Fourth Proportional to 118,971.96, 164,181.54 and 65,257.42

Step by Step Solution

1. Step 1: Write the proportion equation
   118,971.96 : 164,181.54 = 65,257.42 : x
2. Step 2: Convert to fraction form
   118,971.96/164,181.54 = 65,257.42/x
3. Step 3: Cross multiply
   118,971.96x = 164,181.54 × 65,257.42
4. Step 4: Simplify right side
   118,971.96x = 10,714,063,712.03
5. Step 5: Solve for x
   x = 10,714,063,712.03/118,971.96
6. Step 6: Final answer
   x = 90,055.37