Finding the Fourth Proportional to 23,189,470.71, 34,628,046.50 and 18,938,072.31

Step by Step Solution

1. Step 1: Write the proportion equation
   23,189,470.71 : 34,628,046.50 = 18,938,072.31 : x
2. Step 2: Convert to fraction form
   23,189,470.71/34,628,046.50 = 18,938,072.31/x
3. Step 3: Cross multiply
   23,189,470.71x = 34,628,046.50 × 18,938,072.31
4. Step 4: Simplify right side
   23,189,470.71x = 655,788,448,476,352
5. Step 5: Solve for x
   x = 655,788,448,476,352/23,189,470.71
6. Step 6: Final answer
   x = 28,279,578.12