Finding the Fourth Proportional to 113,839.16, 170,742.69 and 71,590.46

Step by Step Solution

1. Step 1: Write the proportion equation
   113,839.16 : 170,742.69 = 71,590.46 : x
2. Step 2: Convert to fraction form
   113,839.16/170,742.69 = 71,590.46/x
3. Step 3: Cross multiply
   113,839.16x = 170,742.69 × 71,590.46
4. Step 4: Simplify right side
   113,839.16x = 12,223,546,865.02
5. Step 5: Solve for x
   x = 12,223,546,865.02/113,839.16
6. Step 6: Final answer
   x = 107,375.59