Finding the Fourth Proportional to 142,112.10, 213,265.35 and 78,932.10

Step by Step Solution

1. Step 1: Write the proportion equation
   142,112.10 : 213,265.35 = 78,932.10 : x
2. Step 2: Convert to fraction form
   142,112.10/213,265.35 = 78,932.10/x
3. Step 3: Cross multiply
   142,112.10x = 213,265.35 × 78,932.10
4. Step 4: Simplify right side
   142,112.10x = 16,833,481,932.74
5. Step 5: Solve for x
   x = 16,833,481,932.74/142,112.10
6. Step 6: Final answer
   x = 118,452.14