Finding the Fourth Proportional to 118,947.50, 164,147.55 and 65,955.50

Step by Step Solution

1. Step 1: Write the proportion equation
   118,947.50 : 164,147.55 = 65,955.50 : x
2. Step 2: Convert to fraction form
   118,947.50/164,147.55 = 65,955.50/x
3. Step 3: Cross multiply
   118,947.50x = 164,147.55 × 65,955.50
4. Step 4: Simplify right side
   118,947.50x = 10,826,433,734.03
5. Step 5: Solve for x
   x = 10,826,433,734.03/118,947.50
6. Step 6: Final answer
   x = 91,018.59