Finding the Fourth Proportional to 118,899.20, 164,085.84 and 65,186.27

Step by Step Solution

1. Step 1: Write the proportion equation
   118,899.20 : 164,085.84 = 65,186.27 : x
2. Step 2: Convert to fraction form
   118,899.20/164,085.84 = 65,186.27/x
3. Step 3: Cross multiply
   118,899.20x = 164,085.84 × 65,186.27
4. Step 4: Simplify right side
   118,899.20x = 10,696,143,048.99
5. Step 5: Solve for x
   x = 10,696,143,048.99/118,899.20
6. Step 6: Final answer
   x = 89,959.76