Finding the Fourth Proportional to 169,123.91, 253,697.69 and 67,921.97

Step by Step Solution

1. Step 1: Write the proportion equation
   169,123.91 : 253,697.69 = 67,921.97 : x
2. Step 2: Convert to fraction form
   169,123.91/253,697.69 = 67,921.97/x
3. Step 3: Cross multiply
   169,123.91x = 253,697.69 × 67,921.97
4. Step 4: Simplify right side
   169,123.91x = 17,231,645,790.57
5. Step 5: Solve for x
   x = 17,231,645,790.57/169,123.91
6. Step 6: Final answer
   x = 101,887.70