Finding the Fourth Proportional to 126,478.56, 174,534.81 and 69,888.72

Step by Step Solution

1. Step 1: Write the proportion equation
   126,478.56 : 174,534.81 = 69,888.72 : x
2. Step 2: Convert to fraction form
   126,478.56/174,534.81 = 69,888.72/x
3. Step 3: Cross multiply
   126,478.56x = 174,534.81 × 69,888.72
4. Step 4: Simplify right side
   126,478.56x = 12,198,014,466.34
5. Step 5: Solve for x
   x = 12,198,014,466.34/126,478.56
6. Step 6: Final answer
   x = 96,443.34