Finding the Fourth Proportional to 118,820.56, 163,972.74 and 65,105.68

Step by Step Solution

1. Step 1: Write the proportion equation
   118,820.56 : 163,972.74 = 65,105.68 : x
2. Step 2: Convert to fraction form
   118,820.56/163,972.74 = 65,105.68/x
3. Step 3: Cross multiply
   118,820.56x = 163,972.74 × 65,105.68
4. Step 4: Simplify right side
   118,820.56x = 10,675,556,739.16
5. Step 5: Solve for x
   x = 10,675,556,739.16/118,820.56
6. Step 6: Final answer
   x = 89,846.04