Finding the Fourth Proportional to 38,978.56, 53,429.60 and 38,453.44

Step by Step Solution

1. Step 1: Write the proportion equation
   38,978.56 : 53,429.60 = 38,453.44 : x
2. Step 2: Convert to fraction form
   38,978.56/53,429.60 = 38,453.44/x
3. Step 3: Cross multiply
   38,978.56x = 53,429.60 × 38,453.44
4. Step 4: Simplify right side
   38,978.56x = 2,054,551,917.82
5. Step 5: Solve for x
   x = 2,054,551,917.82/38,978.56
6. Step 6: Final answer
   x = 52,709.80