Finding the Fourth Proportional to 295,820.72, 443,643.48 and 85,460.56

Step by Step Solution

1. Step 1: Write the proportion equation
   295,820.72 : 443,643.48 = 85,460.56 : x
2. Step 2: Convert to fraction form
   295,820.72/443,643.48 = 85,460.56/x
3. Step 3: Cross multiply
   295,820.72x = 443,643.48 × 85,460.56
4. Step 4: Simplify right side
   295,820.72x = 37,914,020,241.15
5. Step 5: Solve for x
   x = 37,914,020,241.15/295,820.72
6. Step 6: Final answer
   x = 128,165.53