Finding the Fourth Proportional to 78,981.51, 108,994.70 and 47,149.73

Step by Step Solution

1. Step 1: Write the proportion equation
   78,981.51 : 108,994.70 = 47,149.73 : x
2. Step 2: Convert to fraction form
   78,981.51/108,994.70 = 47,149.73/x
3. Step 3: Cross multiply
   78,981.51x = 108,994.70 × 47,149.73
4. Step 4: Simplify right side
   78,981.51x = 5,139,070,249.33
5. Step 5: Solve for x
   x = 5,139,070,249.33/78,981.51
6. Step 6: Final answer
   x = 65,066.75