Finding the Fourth Proportional to 208,287.57, 312,460.52 and 68,010.69

Step by Step Solution

1. Step 1: Write the proportion equation
   208,287.57 : 312,460.52 = 68,010.69 : x
2. Step 2: Convert to fraction form
   208,287.57/312,460.52 = 68,010.69/x
3. Step 3: Cross multiply
   208,287.57x = 312,460.52 × 68,010.69
4. Step 4: Simplify right side
   208,287.57x = 21,250,655,222.91
5. Step 5: Solve for x
   x = 21,250,655,222.91/208,287.57
6. Step 6: Final answer
   x = 102,025.56