Finding the Fourth Proportional to 118,890.42, 164,041.83 and 80,655.18

Step by Step Solution

1. Step 1: Write the proportion equation
   118,890.42 : 164,041.83 = 80,655.18 : x
2. Step 2: Convert to fraction form
   118,890.42/164,041.83 = 80,655.18/x
3. Step 3: Cross multiply
   118,890.42x = 164,041.83 × 80,655.18
4. Step 4: Simplify right side
   118,890.42x = 13,230,823,326.18
5. Step 5: Solve for x
   x = 13,230,823,326.18/118,890.42
6. Step 6: Final answer
   x = 111,285.87