Finding the Fourth Proportional to 115,123.50, 172,677.33 and 70,757.10

Step by Step Solution

1. Step 1: Write the proportion equation
   115,123.50 : 172,677.33 = 70,757.10 : x
2. Step 2: Convert to fraction form
   115,123.50/172,677.33 = 70,757.10/x
3. Step 3: Cross multiply
   115,123.50x = 172,677.33 × 70,757.10
4. Step 4: Simplify right side
   115,123.50x = 12,218,147,106.54
5. Step 5: Solve for x
   x = 12,218,147,106.54/115,123.50
6. Step 6: Final answer
   x = 106,130.78