Finding the Fourth Proportional to 105,887.31, 146,025.48 and 84,448.38

Step by Step Solution

1. Step 1: Write the proportion equation
   105,887.31 : 146,025.48 = 84,448.38 : x
2. Step 2: Convert to fraction form
   105,887.31/146,025.48 = 84,448.38/x
3. Step 3: Cross multiply
   105,887.31x = 146,025.48 × 84,448.38
4. Step 4: Simplify right side
   105,887.31x = 12,331,615,224.72
5. Step 5: Solve for x
   x = 12,331,615,224.72/105,887.31
6. Step 6: Final answer
   x = 116,459.80