Finding the Fourth Proportional to 72,734.13, 109,088.82 and 20,131.29

Step by Step Solution

1. Step 1: Write the proportion equation
   72,734.13 : 109,088.82 = 20,131.29 : x
2. Step 2: Convert to fraction form
   72,734.13/109,088.82 = 20,131.29/x
3. Step 3: Cross multiply
   72,734.13x = 109,088.82 × 20,131.29
4. Step 4: Simplify right side
   72,734.13x = 2,196,098,671.18
5. Step 5: Solve for x
   x = 2,196,098,671.18/72,734.13
6. Step 6: Final answer
   x = 30,193.51