Finding the Fourth Proportional to 142,429.76, 213,749.61 and 67,550.12

Step by Step Solution

1. Step 1: Write the proportion equation
   142,429.76 : 213,749.61 = 67,550.12 : x
2. Step 2: Convert to fraction form
   142,429.76/213,749.61 = 67,550.12/x
3. Step 3: Cross multiply
   142,429.76x = 213,749.61 × 67,550.12
4. Step 4: Simplify right side
   142,429.76x = 14,438,811,284.95
5. Step 5: Solve for x
   x = 14,438,811,284.95/142,429.76
6. Step 6: Final answer
   x = 101,374.96