Finding the Fourth Proportional to 118,362.75, 163,340.59 and 64,647.89

Step by Step Solution

1. Step 1: Write the proportion equation
   118,362.75 : 163,340.59 = 64,647.89 : x
2. Step 2: Convert to fraction form
   118,362.75/163,340.59 = 64,647.89/x
3. Step 3: Cross multiply
   118,362.75x = 163,340.59 × 64,647.89
4. Step 4: Simplify right side
   118,362.75x = 10,559,625,169.07
5. Step 5: Solve for x
   x = 10,559,625,169.07/118,362.75
6. Step 6: Final answer
   x = 89,214.09