Finding the Fourth Proportional to 90,482.72, 135,635.85 and 43,085.09

Step by Step Solution

1. Step 1: Write the proportion equation
   90,482.72 : 135,635.85 = 43,085.09 : x
2. Step 2: Convert to fraction form
   90,482.72/135,635.85 = 43,085.09/x
3. Step 3: Cross multiply
   90,482.72x = 135,635.85 × 43,085.09
4. Step 4: Simplify right side
   90,482.72x = 5,843,883,143.57
5. Step 5: Solve for x
   x = 5,843,883,143.57/90,482.72
6. Step 6: Final answer
   x = 64,585.63