Finding the Fourth Proportional to 90,590.72, 135,873.82 and 34,445

Step by Step Solution

1. Step 1: Write the proportion equation
   90,590.72 : 135,873.82 = 34,445 : x
2. Step 2: Convert to fraction form
   90,590.72/135,873.82 = 34,445/x
3. Step 3: Cross multiply
   90,590.72x = 135,873.82 × 34,445
4. Step 4: Simplify right side
   90,590.72x = 4,680,173,729.90
5. Step 5: Solve for x
   x = 4,680,173,729.90/90,590.72
6. Step 6: Final answer
   x = 51,662.84