Finding the Fourth Proportional to 126,978.56, 175,235.52 and 70,386.08

Step by Step Solution

1. Step 1: Write the proportion equation
   126,978.56 : 175,235.52 = 70,386.08 : x
2. Step 2: Convert to fraction form
   126,978.56/175,235.52 = 70,386.08/x
3. Step 3: Cross multiply
   126,978.56x = 175,235.52 × 70,386.08
4. Step 4: Simplify right side
   126,978.56x = 12,334,141,329.56
5. Step 5: Solve for x
   x = 12,334,141,329.56/126,978.56
6. Step 6: Final answer
   x = 97,135.62