Finding the Fourth Proportional to 67,663.73, 101,505.32 and 20,920.25

Step by Step Solution

1. Step 1: Write the proportion equation
   67,663.73 : 101,505.32 = 20,920.25 : x
2. Step 2: Convert to fraction form
   67,663.73/101,505.32 = 20,920.25/x
3. Step 3: Cross multiply
   67,663.73x = 101,505.32 × 20,920.25
4. Step 4: Simplify right side
   67,663.73x = 2,123,516,670.73
5. Step 5: Solve for x
   x = 2,123,516,670.73/67,663.73
6. Step 6: Final answer
   x = 31,383.38