Finding the Fourth Proportional to 57,826,813.61, 86,740,515.56 and 19,488,659.87

Step by Step Solution

1. Step 1: Write the proportion equation
   57,826,813.61 : 86,740,515.56 = 19,488,659.87 : x
2. Step 2: Convert to fraction form
   57,826,813.61/86,740,515.56 = 19,488,659.87/x
3. Step 3: Cross multiply
   57,826,813.61x = 86,740,515.56 × 19,488,659.87
4. Step 4: Simplify right side
   57,826,813.61x = 1,690,456,404,962,855.50
5. Step 5: Solve for x
   x = 1,690,456,404,962,855.50/57,826,813.61
6. Step 6: Final answer
   x = 29,233,089.28