Finding the Fourth Proportional to 126,320.88, 189,441.84 and 42,061.36

Step by Step Solution

1. Step 1: Write the proportion equation
   126,320.88 : 189,441.84 = 42,061.36 : x
2. Step 2: Convert to fraction form
   126,320.88/189,441.84 = 42,061.36/x
3. Step 3: Cross multiply
   126,320.88x = 189,441.84 × 42,061.36
4. Step 4: Simplify right side
   126,320.88x = 7,968,181,431.30
5. Step 5: Solve for x
   x = 7,968,181,431.30/126,320.88
6. Step 6: Final answer
   x = 63,078.89