Finding the Fourth Proportional to 118,919.28, 164,110.83 and 65,201.07

Step by Step Solution

1. Step 1: Write the proportion equation
   118,919.28 : 164,110.83 = 65,201.07 : x
2. Step 2: Convert to fraction form
   118,919.28/164,110.83 = 65,201.07/x
3. Step 3: Cross multiply
   118,919.28x = 164,110.83 × 65,201.07
4. Step 4: Simplify right side
   118,919.28x = 10,700,201,714.59
5. Step 5: Solve for x
   x = 10,700,201,714.59/118,919.28
6. Step 6: Final answer
   x = 89,978.70