Finding the Fourth Proportional to 45,439.41, 62,758.89 and 30,305.78

Step by Step Solution

1. Step 1: Write the proportion equation
   45,439.41 : 62,758.89 = 30,305.78 : x
2. Step 2: Convert to fraction form
   45,439.41/62,758.89 = 30,305.78/x
3. Step 3: Cross multiply
   45,439.41x = 62,758.89 × 30,305.78
4. Step 4: Simplify right side
   45,439.41x = 1,901,956,799.59
5. Step 5: Solve for x
   x = 1,901,956,799.59/45,439.41
6. Step 6: Final answer
   x = 41,856.99