Finding the Fourth Proportional to 57,826,815.12, 86,740,517.82 and 19,488,661.38

Step by Step Solution

1. Step 1: Write the proportion equation
   57,826,815.12 : 86,740,517.82 = 19,488,661.38 : x
2. Step 2: Convert to fraction form
   57,826,815.12/86,740,517.82 = 19,488,661.38/x
3. Step 3: Cross multiply
   57,826,815.12x = 86,740,517.82 × 19,488,661.38
4. Step 4: Simplify right side
   57,826,815.12x = 1,690,456,579,719,835.50
5. Step 5: Solve for x
   x = 1,690,456,579,719,835.50/57,826,815.12
6. Step 6: Final answer
   x = 29,233,091.54