Finding the Fourth Proportional to 118,971.99, 164,181.20 and 65,257.25

Step by Step Solution

1. Step 1: Write the proportion equation
   118,971.99 : 164,181.20 = 65,257.25 : x
2. Step 2: Convert to fraction form
   118,971.99/164,181.20 = 65,257.25/x
3. Step 3: Cross multiply
   118,971.99x = 164,181.20 × 65,257.25
4. Step 4: Simplify right side
   118,971.99x = 10,714,012,466.51
5. Step 5: Solve for x
   x = 10,714,012,466.51/118,971.99
6. Step 6: Final answer
   x = 90,054.92