Finding the Fourth Proportional to 118,827.69, 163,979.64 and 65,111.55

Step by Step Solution

1. Step 1: Write the proportion equation
   118,827.69 : 163,979.64 = 65,111.55 : x
2. Step 2: Convert to fraction form
   118,827.69/163,979.64 = 65,111.55/x
3. Step 3: Cross multiply
   118,827.69x = 163,979.64 × 65,111.55
4. Step 4: Simplify right side
   118,827.69x = 10,676,968,528.84
5. Step 5: Solve for x
   x = 10,676,968,528.84/118,827.69
6. Step 6: Final answer
   x = 89,852.53