Finding the Fourth Proportional to 118,904.10, 164,087.60 and 65,187.96

Step by Step Solution

1. Step 1: Write the proportion equation
   118,904.10 : 164,087.60 = 65,187.96 : x
2. Step 2: Convert to fraction form
   118,904.10/164,087.60 = 65,187.96/x
3. Step 3: Cross multiply
   118,904.10x = 164,087.60 × 65,187.96
4. Step 4: Simplify right side
   118,904.10x = 10,696,535,905.30
5. Step 5: Solve for x
   x = 10,696,535,905.30/118,904.10
6. Step 6: Final answer
   x = 89,959.35