Finding the Fourth Proportional to 118,846.87, 164,010.50 and 65,131.45

Step by Step Solution

1. Step 1: Write the proportion equation
   118,846.87 : 164,010.50 = 65,131.45 : x
2. Step 2: Convert to fraction form
   118,846.87/164,010.50 = 65,131.45/x
3. Step 3: Cross multiply
   118,846.87x = 164,010.50 × 65,131.45
4. Step 4: Simplify right side
   118,846.87x = 10,682,241,680.23
5. Step 5: Solve for x
   x = 10,682,241,680.23/118,846.87
6. Step 6: Final answer
   x = 89,882.40