Finding the Fourth Proportional to 118,796.48, 163,938.84 and 65,081.60

Step by Step Solution

1. Step 1: Write the proportion equation
   118,796.48 : 163,938.84 = 65,081.60 : x
2. Step 2: Convert to fraction form
   118,796.48/163,938.84 = 65,081.60/x
3. Step 3: Cross multiply
   118,796.48x = 163,938.84 × 65,081.60
4. Step 4: Simplify right side
   118,796.48x = 10,669,402,009.34
5. Step 5: Solve for x
   x = 10,669,402,009.34/118,796.48
6. Step 6: Final answer
   x = 89,812.44