Finding the Fourth Proportional to 72,688.04, 109,034.12 and 20,097.52

Step by Step Solution

1. Step 1: Write the proportion equation
   72,688.04 : 109,034.12 = 20,097.52 : x
2. Step 2: Convert to fraction form
   72,688.04/109,034.12 = 20,097.52/x
3. Step 3: Cross multiply
   72,688.04x = 109,034.12 × 20,097.52
4. Step 4: Simplify right side
   72,688.04x = 2,191,315,407.38
5. Step 5: Solve for x
   x = 2,191,315,407.38/72,688.04
6. Step 6: Final answer
   x = 30,146.85