Finding the Fourth Proportional to 231,060.39, 318,851.94 and 129,065.59

Step by Step Solution

1. Step 1: Write the proportion equation
   231,060.39 : 318,851.94 = 129,065.59 : x
2. Step 2: Convert to fraction form
   231,060.39/318,851.94 = 129,065.59/x
3. Step 3: Cross multiply
   231,060.39x = 318,851.94 × 129,065.59
4. Step 4: Simplify right side
   231,060.39x = 41,152,813,758.74
5. Step 5: Solve for x
   x = 41,152,813,758.74/231,060.39
6. Step 6: Final answer
   x = 178,104.15