Finding the Fourth Proportional to 448,301.94, 672,612.78 and 223,642.50

Step by Step Solution

1. Step 1: Write the proportion equation
   448,301.94 : 672,612.78 = 223,642.50 : x
2. Step 2: Convert to fraction form
   448,301.94/672,612.78 = 223,642.50/x
3. Step 3: Cross multiply
   448,301.94x = 672,612.78 × 223,642.50
4. Step 4: Simplify right side
   448,301.94x = 150,424,803,651.15
5. Step 5: Solve for x
   x = 150,424,803,651.15/448,301.94
6. Step 6: Final answer
   x = 335,543.50