Finding the Fourth Proportional to 126,978.18, 190,300.14 and 70,844.70

Step by Step Solution

1. Step 1: Write the proportion equation
   126,978.18 : 190,300.14 = 70,844.70 : x
2. Step 2: Convert to fraction form
   126,978.18/190,300.14 = 70,844.70/x
3. Step 3: Cross multiply
   126,978.18x = 190,300.14 × 70,844.70
4. Step 4: Simplify right side
   126,978.18x = 13,481,756,328.26
5. Step 5: Solve for x
   x = 13,481,756,328.26/126,978.18
6. Step 6: Final answer
   x = 106,173.80