Finding the Fourth Proportional to 118,609.98, 163,685.86 and 64,895.00

Step by Step Solution

1. Step 1: Write the proportion equation
   118,609.98 : 163,685.86 = 64,895.00 : x
2. Step 2: Convert to fraction form
   118,609.98/163,685.86 = 64,895.00/x
3. Step 3: Cross multiply
   118,609.98x = 163,685.86 × 64,895.00
4. Step 4: Simplify right side
   118,609.98x = 10,622,392,904.03
5. Step 5: Solve for x
   x = 10,622,392,904.03/118,609.98
6. Step 6: Final answer
   x = 89,557.33