Finding the Fourth Proportional to 28,278,882.11, 42,359,470.18 and 17,992,789.31

Step by Step Solution

1. Step 1: Write the proportion equation
   28,278,882.11 : 42,359,470.18 = 17,992,789.31 : x
2. Step 2: Convert to fraction form
   28,278,882.11/42,359,470.18 = 17,992,789.31/x
3. Step 3: Cross multiply
   28,278,882.11x = 42,359,470.18 × 17,992,789.31
4. Step 4: Simplify right side
   28,278,882.11x = 762,165,021,975,188.50
5. Step 5: Solve for x
   x = 762,165,021,975,188.50/28,278,882.11
6. Step 6: Final answer
   x = 26,951,738.02