Finding the Fourth Proportional to 72,385,003.10, 99,892,014.18 and 39,345,231.80

Step by Step Solution

1. Step 1: Write the proportion equation
   72,385,003.10 : 99,892,014.18 = 39,345,231.80 : x
2. Step 2: Convert to fraction form
   72,385,003.10/99,892,014.18 = 39,345,231.80/x
3. Step 3: Cross multiply
   72,385,003.10x = 99,892,014.18 × 39,345,231.80
4. Step 4: Simplify right side
   72,385,003.10x = 3,930,274,452,880,987
5. Step 5: Solve for x
   x = 3,930,274,452,880,987/72,385,003.10
6. Step 6: Final answer
   x = 54,296,805.75