Finding the Fourth Proportional to 406,482.48, 560,719.82 and 320,123.32

Step by Step Solution

1. Step 1: Write the proportion equation
   406,482.48 : 560,719.82 = 320,123.32 : x
2. Step 2: Convert to fraction form
   406,482.48/560,719.82 = 320,123.32/x
3. Step 3: Cross multiply
   406,482.48x = 560,719.82 × 320,123.32
4. Step 4: Simplify right side
   406,482.48x = 179,499,487,564.60
5. Step 5: Solve for x
   x = 179,499,487,564.60/406,482.48
6. Step 6: Final answer
   x = 441,592.19