Finding the Fourth Proportional to 90,290.16, 135,446.76 and 34,164.72

Step by Step Solution

1. Step 1: Write the proportion equation
   90,290.16 : 135,446.76 = 34,164.72 : x
2. Step 2: Convert to fraction form
   90,290.16/135,446.76 = 34,164.72/x
3. Step 3: Cross multiply
   90,290.16x = 135,446.76 × 34,164.72
4. Step 4: Simplify right side
   90,290.16x = 4,627,500,630.31
5. Step 5: Solve for x
   x = 4,627,500,630.31/90,290.16
6. Step 6: Final answer
   x = 51,251.44