Finding the Fourth Proportional to 126,978.18, 190,300.16 and 70,844.72

Step by Step Solution

1. Step 1: Write the proportion equation
   126,978.18 : 190,300.16 = 70,844.72 : x
2. Step 2: Convert to fraction form
   126,978.18/190,300.16 = 70,844.72/x
3. Step 3: Cross multiply
   126,978.18x = 190,300.16 × 70,844.72
4. Step 4: Simplify right side
   126,978.18x = 13,481,760,245.43
5. Step 5: Solve for x
   x = 13,481,760,245.43/126,978.18
6. Step 6: Final answer
   x = 106,173.83