Finding the Fourth Proportional to 118,610.23, 163,686.20 and 64,895.25

Step by Step Solution

1. Step 1: Write the proportion equation
   118,610.23 : 163,686.20 = 64,895.25 : x
2. Step 2: Convert to fraction form
   118,610.23/163,686.20 = 64,895.25/x
3. Step 3: Cross multiply
   118,610.23x = 163,686.20 × 64,895.25
4. Step 4: Simplify right side
   118,610.23x = 10,622,456,870.55
5. Step 5: Solve for x
   x = 10,622,456,870.55/118,610.23
6. Step 6: Final answer
   x = 89,557.68