Finding the Fourth Proportional to 55,790.02, 76,989.72 and 30,639.52

Step by Step Solution

1. Step 1: Write the proportion equation
   55,790.02 : 76,989.72 = 30,639.52 : x
2. Step 2: Convert to fraction form
   55,790.02/76,989.72 = 30,639.52/x
3. Step 3: Cross multiply
   55,790.02x = 76,989.72 × 30,639.52
4. Step 4: Simplify right side
   55,790.02x = 2,358,928,065.73
5. Step 5: Solve for x
   x = 2,358,928,065.73/55,790.02
6. Step 6: Final answer
   x = 42,282.26