Finding the Fourth Proportional to 118,198.56, 163,110.78 and 64,483.56

Step by Step Solution

1. Step 1: Write the proportion equation
   118,198.56 : 163,110.78 = 64,483.56 : x
2. Step 2: Convert to fraction form
   118,198.56/163,110.78 = 64,483.56/x
3. Step 3: Cross multiply
   118,198.56x = 163,110.78 × 64,483.56
4. Step 4: Simplify right side
   118,198.56x = 10,517,963,768.78
5. Step 5: Solve for x
   x = 10,517,963,768.78/118,198.56
6. Step 6: Final answer
   x = 88,985.55