Finding the Fourth Proportional to 295,764.72, 443,559.60 and 85,404.48

Step by Step Solution

1. Step 1: Write the proportion equation
   295,764.72 : 443,559.60 = 85,404.48 : x
2. Step 2: Convert to fraction form
   295,764.72/443,559.60 = 85,404.48/x
3. Step 3: Cross multiply
   295,764.72x = 443,559.60 × 85,404.48
4. Step 4: Simplify right side
   295,764.72x = 37,881,976,987.01
5. Step 5: Solve for x
   x = 37,881,976,987.01/295,764.72
6. Step 6: Final answer
   x = 128,081.46