Finding the Fourth Proportional to 118,610.56, 163,683.78 and 64,894.36

Step by Step Solution

1. Step 1: Write the proportion equation
   118,610.56 : 163,683.78 = 64,894.36 : x
2. Step 2: Convert to fraction form
   118,610.56/163,683.78 = 64,894.36/x
3. Step 3: Cross multiply
   118,610.56x = 163,683.78 × 64,894.36
4. Step 4: Simplify right side
   118,610.56x = 10,622,154,145.48
5. Step 5: Solve for x
   x = 10,622,154,145.48/118,610.56
6. Step 6: Final answer
   x = 89,554.88