Finding the Fourth Proportional to 172,945.68, 259,356.18 and 73,113.69

Step by Step Solution

1. Step 1: Write the proportion equation
   172,945.68 : 259,356.18 = 73,113.69 : x
2. Step 2: Convert to fraction form
   172,945.68/259,356.18 = 73,113.69/x
3. Step 3: Cross multiply
   172,945.68x = 259,356.18 × 73,113.69
4. Step 4: Simplify right side
   172,945.68x = 18,962,486,720.72
5. Step 5: Solve for x
   x = 18,962,486,720.72/172,945.68
6. Step 6: Final answer
   x = 109,644.18