Finding the Fourth Proportional to 142,404.06, 213,638.49 and 75,809.10

Step by Step Solution

1. Step 1: Write the proportion equation
   142,404.06 : 213,638.49 = 75,809.10 : x
2. Step 2: Convert to fraction form
   142,404.06/213,638.49 = 75,809.10/x
3. Step 3: Cross multiply
   142,404.06x = 213,638.49 × 75,809.10
4. Step 4: Simplify right side
   142,404.06x = 16,195,741,652.26
5. Step 5: Solve for x
   x = 16,195,741,652.26/142,404.06
6. Step 6: Final answer
   x = 113,730.90