Finding the Fourth Proportional to 216,409.05, 326,090.72 and 177,830.37

Step by Step Solution

1. Step 1: Write the proportion equation
   216,409.05 : 326,090.72 = 177,830.37 : x
2. Step 2: Convert to fraction form
   216,409.05/326,090.72 = 177,830.37/x
3. Step 3: Cross multiply
   216,409.05x = 326,090.72 × 177,830.37
4. Step 4: Simplify right side
   216,409.05x = 57,988,830,871.56
5. Step 5: Solve for x
   x = 57,988,830,871.56/216,409.05
6. Step 6: Final answer
   x = 267,959.37