Finding the Fourth Proportional to 128,084.47, 176,755.89 and 74,382.69

Step by Step Solution

1. Step 1: Write the proportion equation
   128,084.47 : 176,755.89 = 74,382.69 : x
2. Step 2: Convert to fraction form
   128,084.47/176,755.89 = 74,382.69/x
3. Step 3: Cross multiply
   128,084.47x = 176,755.89 × 74,382.69
4. Step 4: Simplify right side
   128,084.47x = 13,147,578,571.54
5. Step 5: Solve for x
   x = 13,147,578,571.54/128,084.47
6. Step 6: Final answer
   x = 102,647.72