Finding the Fourth Proportional to 126,042.42, 189,142.50 and 51,162.60

Step by Step Solution

1. Step 1: Write the proportion equation
   126,042.42 : 189,142.50 = 51,162.60 : x
2. Step 2: Convert to fraction form
   126,042.42/189,142.50 = 51,162.60/x
3. Step 3: Cross multiply
   126,042.42x = 189,142.50 × 51,162.60
4. Step 4: Simplify right side
   126,042.42x = 9,677,022,070.50
5. Step 5: Solve for x
   x = 9,677,022,070.50/126,042.42
6. Step 6: Final answer
   x = 76,775.91