Finding the Fourth Proportional to 118,913.99, 164,100.06 and 65,198.88

Step by Step Solution

1. Step 1: Write the proportion equation
   118,913.99 : 164,100.06 = 65,198.88 : x
2. Step 2: Convert to fraction form
   118,913.99/164,100.06 = 65,198.88/x
3. Step 3: Cross multiply
   118,913.99x = 164,100.06 × 65,198.88
4. Step 4: Simplify right side
   118,913.99x = 10,699,140,119.93
5. Step 5: Solve for x
   x = 10,699,140,119.93/118,913.99
6. Step 6: Final answer
   x = 89,973.77