Finding the Fourth Proportional to 90,188.98, 135,314.55 and 40,303.51

Step by Step Solution

1. Step 1: Write the proportion equation
   90,188.98 : 135,314.55 = 40,303.51 : x
2. Step 2: Convert to fraction form
   90,188.98/135,314.55 = 40,303.51/x
3. Step 3: Cross multiply
   90,188.98x = 135,314.55 × 40,303.51
4. Step 4: Simplify right side
   90,188.98x = 5,453,650,980.78
5. Step 5: Solve for x
   x = 5,453,650,980.78/90,188.98
6. Step 6: Final answer
   x = 60,469.15