Finding the Fourth Proportional to 118,818.24, 163,969.12 and 65,105.28

Step by Step Solution

1. Step 1: Write the proportion equation
   118,818.24 : 163,969.12 = 65,105.28 : x
2. Step 2: Convert to fraction form
   118,818.24/163,969.12 = 65,105.28/x
3. Step 3: Cross multiply
   118,818.24x = 163,969.12 × 65,105.28
4. Step 4: Simplify right side
   118,818.24x = 10,675,255,468.95
5. Step 5: Solve for x
   x = 10,675,255,468.95/118,818.24
6. Step 6: Final answer
   x = 89,845.26