Finding the Fourth Proportional to 107,857.98, 161,796.69 and 28,970.46

Step by Step Solution

1. Step 1: Write the proportion equation
   107,857.98 : 161,796.69 = 28,970.46 : x
2. Step 2: Convert to fraction form
   107,857.98/161,796.69 = 28,970.46/x
3. Step 3: Cross multiply
   107,857.98x = 161,796.69 × 28,970.46
4. Step 4: Simplify right side
   107,857.98x = 4,687,324,535.78
5. Step 5: Solve for x
   x = 4,687,324,535.78/107,857.98
6. Step 6: Final answer
   x = 43,458.30