Finding the Fourth Proportional to 59,213,320.12, 81,689,359.98 and 39,640,514.55

Step by Step Solution

1. Step 1: Write the proportion equation
   59,213,320.12 : 81,689,359.98 = 39,640,514.55 : x
2. Step 2: Convert to fraction form
   59,213,320.12/81,689,359.98 = 39,640,514.55/x
3. Step 3: Cross multiply
   59,213,320.12x = 81,689,359.98 × 39,640,514.55
4. Step 4: Simplify right side
   59,213,320.12x = 3,238,208,262,867,377.50
5. Step 5: Solve for x
   x = 3,238,208,262,867,377.50/59,213,320.12
6. Step 6: Final answer
   x = 54,687,159.18