Finding the Fourth Proportional to 231,018.04, 318,806.01 and 129,047.80

Step by Step Solution

1. Step 1: Write the proportion equation
   231,018.04 : 318,806.01 = 129,047.80 : x
2. Step 2: Convert to fraction form
   231,018.04/318,806.01 = 129,047.80/x
3. Step 3: Cross multiply
   231,018.04x = 318,806.01 × 129,047.80
4. Step 4: Simplify right side
   231,018.04x = 41,141,211,978.01
5. Step 5: Solve for x
   x = 41,141,211,978.01/231,018.04
6. Step 6: Final answer
   x = 178,086.58