Finding the Fourth Proportional to 106,426.78, 146,716.36 and 83,726.35

Step by Step Solution

1. Step 1: Write the proportion equation
   106,426.78 : 146,716.36 = 83,726.35 : x
2. Step 2: Convert to fraction form
   106,426.78/146,716.36 = 83,726.35/x
3. Step 3: Cross multiply
   106,426.78x = 146,716.36 × 83,726.35
4. Step 4: Simplify right side
   106,426.78x = 12,284,025,308.09
5. Step 5: Solve for x
   x = 12,284,025,308.09/106,426.78
6. Step 6: Final answer
   x = 115,422.31