Finding the Fourth Proportional to 142,403.15, 196,337.72 and 91,325.76

Step by Step Solution

1. Step 1: Write the proportion equation
   142,403.15 : 196,337.72 = 91,325.76 : x
2. Step 2: Convert to fraction form
   142,403.15/196,337.72 = 91,325.76/x
3. Step 3: Cross multiply
   142,403.15x = 196,337.72 × 91,325.76
4. Step 4: Simplify right side
   142,403.15x = 17,930,691,039.04
5. Step 5: Solve for x
   x = 17,930,691,039.04/142,403.15
6. Step 6: Final answer
   x = 125,914.99