Finding the Fourth Proportional to 90,015.53, 135,042.42 and 30,835.31

Step by Step Solution

1. Step 1: Write the proportion equation
   90,015.53 : 135,042.42 = 30,835.31 : x
2. Step 2: Convert to fraction form
   90,015.53/135,042.42 = 30,835.31/x
3. Step 3: Cross multiply
   90,015.53x = 135,042.42 × 30,835.31
4. Step 4: Simplify right side
   90,015.53x = 4,164,074,883.85
5. Step 5: Solve for x
   x = 4,164,074,883.85/90,015.53
6. Step 6: Final answer
   x = 46,259.52