Finding the Fourth Proportional to 126,978.42, 190,300.51 and 70,844.97

Step by Step Solution

1. Step 1: Write the proportion equation
   126,978.42 : 190,300.51 = 70,844.97 : x
2. Step 2: Convert to fraction form
   126,978.42/190,300.51 = 70,844.97/x
3. Step 3: Cross multiply
   126,978.42x = 190,300.51 × 70,844.97
4. Step 4: Simplify right side
   126,978.42x = 13,481,833,921.93
5. Step 5: Solve for x
   x = 13,481,833,921.93/126,978.42
6. Step 6: Final answer
   x = 106,174.21