Finding the Fourth Proportional to 118,611.56, 163,685.16 and 64,895.36

Step by Step Solution

1. Step 1: Write the proportion equation
   118,611.56 : 163,685.16 = 64,895.36 : x
2. Step 2: Convert to fraction form
   118,611.56/163,685.16 = 64,895.36/x
3. Step 3: Cross multiply
   118,611.56x = 163,685.16 × 64,895.36
4. Step 4: Simplify right side
   118,611.56x = 10,622,407,384.86
5. Step 5: Solve for x
   x = 10,622,407,384.86/118,611.56
6. Step 6: Final answer
   x = 89,556.26