Finding the Fourth Proportional to 72,300,910.80, 99,775,143.18 and 39,705,862.80

Step by Step Solution

1. Step 1: Write the proportion equation
   72,300,910.80 : 99,775,143.18 = 39,705,862.80 : x
2. Step 2: Convert to fraction form
   72,300,910.80/99,775,143.18 = 39,705,862.80/x
3. Step 3: Cross multiply
   72,300,910.80x = 99,775,143.18 × 39,705,862.80
4. Step 4: Simplify right side
   72,300,910.80x = 3,961,658,145,955,435.50
5. Step 5: Solve for x
   x = 3,961,658,145,955,435.50/72,300,910.80
6. Step 6: Final answer
   x = 54,794,028.21