Finding the Fourth Proportional to 118,673.06, 163,769.06 and 64,961.50

Step by Step Solution

1. Step 1: Write the proportion equation
   118,673.06 : 163,769.06 = 64,961.50 : x
2. Step 2: Convert to fraction form
   118,673.06/163,769.06 = 64,961.50/x
3. Step 3: Cross multiply
   118,673.06x = 163,769.06 × 64,961.50
4. Step 4: Simplify right side
   118,673.06x = 10,638,683,485.83
5. Step 5: Solve for x
   x = 10,638,683,485.83/118,673.06
6. Step 6: Final answer
   x = 89,647.00