Finding the Fourth Proportional to 123,898.56, 170,983.36 and 72,914.88

Step by Step Solution

1. Step 1: Write the proportion equation
   123,898.56 : 170,983.36 = 72,914.88 : x
2. Step 2: Convert to fraction form
   123,898.56/170,983.36 = 72,914.88/x
3. Step 3: Cross multiply
   123,898.56x = 170,983.36 × 72,914.88
4. Step 4: Simplify right side
   123,898.56x = 12,467,231,176.40
5. Step 5: Solve for x
   x = 12,467,231,176.40/123,898.56
6. Step 6: Final answer
   x = 100,624.50