Finding the Fourth Proportional to 55,620.42, 76,755.15 and 30,469.74

Step by Step Solution

1. Step 1: Write the proportion equation
   55,620.42 : 76,755.15 = 30,469.74 : x
2. Step 2: Convert to fraction form
   55,620.42/76,755.15 = 30,469.74/x
3. Step 3: Cross multiply
   55,620.42x = 76,755.15 × 30,469.74
4. Step 4: Simplify right side
   55,620.42x = 2,338,709,464.16
5. Step 5: Solve for x
   x = 2,338,709,464.16/55,620.42
6. Step 6: Final answer
   x = 42,047.68