Finding the Fourth Proportional to 126,500.47, 189,688.74 and 42,231.72

Step by Step Solution

1. Step 1: Write the proportion equation
   126,500.47 : 189,688.74 = 42,231.72 : x
2. Step 2: Convert to fraction form
   126,500.47/189,688.74 = 42,231.72/x
3. Step 3: Cross multiply
   126,500.47x = 189,688.74 × 42,231.72
4. Step 4: Simplify right side
   126,500.47x = 8,010,880,806.39
5. Step 5: Solve for x
   x = 8,010,880,806.39/126,500.47
6. Step 6: Final answer
   x = 63,326.89