Finding the Fourth Proportional to 77,789.39, 107,350.72 and 45,958.21

Step by Step Solution

1. Step 1: Write the proportion equation
   77,789.39 : 107,350.72 = 45,958.21 : x
2. Step 2: Convert to fraction form
   77,789.39/107,350.72 = 45,958.21/x
3. Step 3: Cross multiply
   77,789.39x = 107,350.72 × 45,958.21
4. Step 4: Simplify right side
   77,789.39x = 4,933,646,550.14
5. Step 5: Solve for x
   x = 4,933,646,550.14/77,789.39
6. Step 6: Final answer
   x = 63,423.13