Finding the Fourth Proportional to 90,018.72, 135,014.22 and 30,840.84

Step by Step Solution

1. Step 1: Write the proportion equation
   90,018.72 : 135,014.22 = 30,840.84 : x
2. Step 2: Convert to fraction form
   90,018.72/135,014.22 = 30,840.84/x
3. Step 3: Cross multiply
   90,018.72x = 135,014.22 × 30,840.84
4. Step 4: Simplify right side
   90,018.72x = 4,163,951,956.74
5. Step 5: Solve for x
   x = 4,163,951,956.74/90,018.72
6. Step 6: Final answer
   x = 46,256.51