Finding the Fourth Proportional to 95,140.71, 142,780.32 and 76,644.09

Step by Step Solution

1. Step 1: Write the proportion equation
   95,140.71 : 142,780.32 = 76,644.09 : x
2. Step 2: Convert to fraction form
   95,140.71/142,780.32 = 76,644.09/x
3. Step 3: Cross multiply
   95,140.71x = 142,780.32 × 76,644.09
4. Step 4: Simplify right side
   95,140.71x = 10,943,267,696.31
5. Step 5: Solve for x
   x = 10,943,267,696.31/95,140.71
6. Step 6: Final answer
   x = 115,021.93