Finding the Fourth Proportional to 118,769.72, 163,902.28 and 65,055.63

Step by Step Solution

1. Step 1: Write the proportion equation
   118,769.72 : 163,902.28 = 65,055.63 : x
2. Step 2: Convert to fraction form
   118,769.72/163,902.28 = 65,055.63/x
3. Step 3: Cross multiply
   118,769.72x = 163,902.28 × 65,055.63
4. Step 4: Simplify right side
   118,769.72x = 10,662,765,921.20
5. Step 5: Solve for x
   x = 10,662,765,921.20/118,769.72
6. Step 6: Final answer
   x = 89,776.81