Finding the Fourth Proportional to 105,889.76, 146,076.56 and 70,109.75

Step by Step Solution

1. Step 1: Write the proportion equation
   105,889.76 : 146,076.56 = 70,109.75 : x
2. Step 2: Convert to fraction form
   105,889.76/146,076.56 = 70,109.75/x
3. Step 3: Cross multiply
   105,889.76x = 146,076.56 × 70,109.75
4. Step 4: Simplify right side
   105,889.76x = 10,241,391,774.38
5. Step 5: Solve for x
   x = 10,241,391,774.38/105,889.76
6. Step 6: Final answer
   x = 96,717.49