Finding the Fourth Proportional to 73,112.68, 109,712.72 and 67,164.04

Step by Step Solution

1. Step 1: Write the proportion equation
   73,112.68 : 109,712.72 = 67,164.04 : x
2. Step 2: Convert to fraction form
   73,112.68/109,712.72 = 67,164.04/x
3. Step 3: Cross multiply
   73,112.68x = 109,712.72 × 67,164.04
4. Step 4: Simplify right side
   73,112.68x = 7,368,749,514.59
5. Step 5: Solve for x
   x = 7,368,749,514.59/73,112.68
6. Step 6: Final answer
   x = 100,786.20