Finding the Fourth Proportional to 118,947.13, 164,145.88 and 65,231.98

Step by Step Solution

1. Step 1: Write the proportion equation
   118,947.13 : 164,145.88 = 65,231.98 : x
2. Step 2: Convert to fraction form
   118,947.13/164,145.88 = 65,231.98/x
3. Step 3: Cross multiply
   118,947.13x = 164,145.88 × 65,231.98
4. Step 4: Simplify right side
   118,947.13x = 10,707,560,761.24
5. Step 5: Solve for x
   x = 10,707,560,761.24/118,947.13
6. Step 6: Final answer
   x = 90,019.50