Finding the Fourth Proportional to 118,504.32, 163,528.32 and 64,778.24

Step by Step Solution

1. Step 1: Write the proportion equation
   118,504.32 : 163,528.32 = 64,778.24 : x
2. Step 2: Convert to fraction form
   118,504.32/163,528.32 = 64,778.24/x
3. Step 3: Cross multiply
   118,504.32x = 163,528.32 × 64,778.24
4. Step 4: Simplify right side
   118,504.32x = 10,593,076,759.76
5. Step 5: Solve for x
   x = 10,593,076,759.76/118,504.32
6. Step 6: Final answer
   x = 89,389.79