Finding the Fourth Proportional to 126,099.72, 174,018.78 and 69,513.12

Step by Step Solution

1. Step 1: Write the proportion equation
   126,099.72 : 174,018.78 = 69,513.12 : x
2. Step 2: Convert to fraction form
   126,099.72/174,018.78 = 69,513.12/x
3. Step 3: Cross multiply
   126,099.72x = 174,018.78 × 69,513.12
4. Step 4: Simplify right side
   126,099.72x = 12,096,588,336.39
5. Step 5: Solve for x
   x = 12,096,588,336.39/126,099.72
6. Step 6: Final answer
   x = 95,928.75