Finding the Fourth Proportional to 90,978.64, 125,550.72 and 52,745.56

Step by Step Solution

1. Step 1: Write the proportion equation
   90,978.64 : 125,550.72 = 52,745.56 : x
2. Step 2: Convert to fraction form
   90,978.64/125,550.72 = 52,745.56/x
3. Step 3: Cross multiply
   90,978.64x = 125,550.72 × 52,745.56
4. Step 4: Simplify right side
   90,978.64x = 6,622,243,034.80
5. Step 5: Solve for x
   x = 6,622,243,034.80/90,978.64
6. Step 6: Final answer
   x = 72,788.99