Finding the Fourth Proportional to 70,579.83, 105,776.31 and 51,771.81

Step by Step Solution

1. Step 1: Write the proportion equation
   70,579.83 : 105,776.31 = 51,771.81 : x
2. Step 2: Convert to fraction form
   70,579.83/105,776.31 = 51,771.81/x
3. Step 3: Cross multiply
   70,579.83x = 105,776.31 × 51,771.81
4. Step 4: Simplify right side
   70,579.83x = 5,476,231,023.82
5. Step 5: Solve for x
   x = 5,476,231,023.82/70,579.83
6. Step 6: Final answer
   x = 77,589.18