Finding the Fourth Proportional to 90,298.80, 135,399.60 and 37,648.80

Step by Step Solution

1. Step 1: Write the proportion equation
   90,298.80 : 135,399.60 = 37,648.80 : x
2. Step 2: Convert to fraction form
   90,298.80/135,399.60 = 37,648.80/x
3. Step 3: Cross multiply
   90,298.80x = 135,399.60 × 37,648.80
4. Step 4: Simplify right side
   90,298.80x = 5,097,632,460.48
5. Step 5: Solve for x
   x = 5,097,632,460.48/90,298.80
6. Step 6: Final answer
   x = 56,452.94