Finding the Fourth Proportional to 81,730,105.38, 122,595,609.57 and 20,319,264.15

Step by Step Solution

1. Step 1: Write the proportion equation
   81,730,105.38 : 122,595,609.57 = 20,319,264.15 : x
2. Step 2: Convert to fraction form
   81,730,105.38/122,595,609.57 = 20,319,264.15/x
3. Step 3: Cross multiply
   81,730,105.38x = 122,595,609.57 × 20,319,264.15
4. Step 4: Simplify right side
   81,730,105.38x = 2,491,052,574,483,097.50
5. Step 5: Solve for x
   x = 2,491,052,574,483,097.50/81,730,105.38
6. Step 6: Final answer
   x = 30,479,008.47