Finding the Fourth Proportional to 72,384,969.42, 99,891,967.59 and 39,345,198.17

Step by Step Solution

1. Step 1: Write the proportion equation
   72,384,969.42 : 99,891,967.59 = 39,345,198.17 : x
2. Step 2: Convert to fraction form
   72,384,969.42/99,891,967.59 = 39,345,198.17/x
3. Step 3: Cross multiply
   72,384,969.42x = 99,891,967.59 × 39,345,198.17
4. Step 4: Simplify right side
   72,384,969.42x = 3,930,269,259,920,307.50
5. Step 5: Solve for x
   x = 3,930,269,259,920,307.50/72,384,969.42
6. Step 6: Final answer
   x = 54,296,759.28