Finding the Fourth Proportional to 172,994.48, 259,397.52 and 78,113.48

Step by Step Solution

1. Step 1: Write the proportion equation
   172,994.48 : 259,397.52 = 78,113.48 : x
2. Step 2: Convert to fraction form
   172,994.48/259,397.52 = 78,113.48/x
3. Step 3: Cross multiply
   172,994.48x = 259,397.52 × 78,113.48
4. Step 4: Simplify right side
   172,994.48x = 20,262,442,990.57
5. Step 5: Solve for x
   x = 20,262,442,990.57/172,994.48
6. Step 6: Final answer
   x = 117,127.69