Finding the Fourth Proportional to 231,016.23, 318,803.50 and 129,045.98

Step by Step Solution

1. Step 1: Write the proportion equation
   231,016.23 : 318,803.50 = 129,045.98 : x
2. Step 2: Convert to fraction form
   231,016.23/318,803.50 = 129,045.98/x
3. Step 3: Cross multiply
   231,016.23x = 318,803.50 × 129,045.98
4. Step 4: Simplify right side
   231,016.23x = 41,140,310,881.94
5. Step 5: Solve for x
   x = 41,140,310,881.94/231,016.23
6. Step 6: Final answer
   x = 178,084.08