Finding the Fourth Proportional to 126,779.50, 174,955.06 and 69,417.78

Step by Step Solution

1. Step 1: Write the proportion equation
   126,779.50 : 174,955.06 = 69,417.78 : x
2. Step 2: Convert to fraction form
   126,779.50/174,955.06 = 69,417.78/x
3. Step 3: Cross multiply
   126,779.50x = 174,955.06 × 69,417.78
4. Step 4: Simplify right side
   126,779.50x = 12,144,991,517.88
5. Step 5: Solve for x
   x = 12,144,991,517.88/126,779.50
6. Step 6: Final answer
   x = 95,796.18