Finding the Fourth Proportional to 127,488.09, 175,936.88 and 70,128.89

Step by Step Solution

1. Step 1: Write the proportion equation
   127,488.09 : 175,936.88 = 70,128.89 : x
2. Step 2: Convert to fraction form
   127,488.09/175,936.88 = 70,128.89/x
3. Step 3: Cross multiply
   127,488.09x = 175,936.88 × 70,128.89
4. Step 4: Simplify right side
   127,488.09x = 12,338,256,874.13
5. Step 5: Solve for x
   x = 12,338,256,874.13/127,488.09
6. Step 6: Final answer
   x = 96,779.68