Finding the Fourth Proportional to 30,939,850.26, 42,667,726.38 and 20,324,498.76

Step by Step Solution

1. Step 1: Write the proportion equation
   30,939,850.26 : 42,667,726.38 = 20,324,498.76 : x
2. Step 2: Convert to fraction form
   30,939,850.26/42,667,726.38 = 20,324,498.76/x
3. Step 3: Cross multiply
   30,939,850.26x = 42,667,726.38 × 20,324,498.76
4. Step 4: Simplify right side
   30,939,850.26x = 867,200,152,003,246.50
5. Step 5: Solve for x
   x = 867,200,152,003,246.50/30,939,850.26
6. Step 6: Final answer
   x = 28,028,582.71