Finding the Fourth Proportional to 73,123.50, 109,685.85 and 17,719.50

Step by Step Solution

1. Step 1: Write the proportion equation
   73,123.50 : 109,685.85 = 17,719.50 : x
2. Step 2: Convert to fraction form
   73,123.50/109,685.85 = 17,719.50/x
3. Step 3: Cross multiply
   73,123.50x = 109,685.85 × 17,719.50
4. Step 4: Simplify right side
   73,123.50x = 1,943,578,419.08
5. Step 5: Solve for x
   x = 1,943,578,419.08/73,123.50
6. Step 6: Final answer
   x = 26,579.40