Finding the Fourth Proportional to 265,662.09, 398,375.78 and 76,079.48

Step by Step Solution

1. Step 1: Write the proportion equation
   265,662.09 : 398,375.78 = 76,079.48 : x
2. Step 2: Convert to fraction form
   265,662.09/398,375.78 = 76,079.48/x
3. Step 3: Cross multiply
   265,662.09x = 398,375.78 × 76,079.48
4. Step 4: Simplify right side
   265,662.09x = 30,308,219,814.72
5. Step 5: Solve for x
   x = 30,308,219,814.72/265,662.09
6. Step 6: Final answer
   x = 114,085.60