Finding the Fourth Proportional to 90,608.52, 135,912.89 and 34,435.43

Step by Step Solution

1. Step 1: Write the proportion equation
   90,608.52 : 135,912.89 = 34,435.43 : x
2. Step 2: Convert to fraction form
   90,608.52/135,912.89 = 34,435.43/x
3. Step 3: Cross multiply
   90,608.52x = 135,912.89 × 34,435.43
4. Step 4: Simplify right side
   90,608.52x = 4,680,218,532.19
5. Step 5: Solve for x
   x = 4,680,218,532.19/90,608.52
6. Step 6: Final answer
   x = 51,653.18