Finding the Fourth Proportional to 142,031.14, 195,920.30 and 91,025.78

Step by Step Solution

1. Step 1: Write the proportion equation
   142,031.14 : 195,920.30 = 91,025.78 : x
2. Step 2: Convert to fraction form
   142,031.14/195,920.30 = 91,025.78/x
3. Step 3: Cross multiply
   142,031.14x = 195,920.30 × 91,025.78
4. Step 4: Simplify right side
   142,031.14x = 17,833,797,373.30
5. Step 5: Solve for x
   x = 17,833,797,373.30/142,031.14
6. Step 6: Final answer
   x = 125,562.59