Finding the Fourth Proportional to 51,443.51, 70,994.81 and 28,781.16

Step by Step Solution

1. Step 1: Write the proportion equation
   51,443.51 : 70,994.81 = 28,781.16 : x
2. Step 2: Convert to fraction form
   51,443.51/70,994.81 = 28,781.16/x
3. Step 3: Cross multiply
   51,443.51x = 70,994.81 × 28,781.16
4. Step 4: Simplify right side
   51,443.51x = 2,043,312,841.87
5. Step 5: Solve for x
   x = 2,043,312,841.87/51,443.51
6. Step 6: Final answer
   x = 39,719.55