Finding the Fourth Proportional to 57,709.36, 79,061.46 and 55,551.32

Step by Step Solution

1. Step 1: Write the proportion equation
   57,709.36 : 79,061.46 = 55,551.32 : x
2. Step 2: Convert to fraction form
   57,709.36/79,061.46 = 55,551.32/x
3. Step 3: Cross multiply
   57,709.36x = 79,061.46 × 55,551.32
4. Step 4: Simplify right side
   57,709.36x = 4,391,968,186.37
5. Step 5: Solve for x
   x = 4,391,968,186.37/57,709.36
6. Step 6: Final answer
   x = 76,104.95