Finding the Fourth Proportional to 126,071.04, 189,126.72 and 42,960

Step by Step Solution

1. Step 1: Write the proportion equation
   126,071.04 : 189,126.72 = 42,960 : x
2. Step 2: Convert to fraction form
   126,071.04/189,126.72 = 42,960/x
3. Step 3: Cross multiply
   126,071.04x = 189,126.72 × 42,960
4. Step 4: Simplify right side
   126,071.04x = 8,124,883,891.20
5. Step 5: Solve for x
   x = 8,124,883,891.20/126,071.04
6. Step 6: Final answer
   x = 64,446.87