Finding the Fourth Proportional to 72,442,063.45, 99,970,768.79 and 39,403,081.18

Step by Step Solution

1. Step 1: Write the proportion equation
   72,442,063.45 : 99,970,768.79 = 39,403,081.18 : x
2. Step 2: Convert to fraction form
   72,442,063.45/99,970,768.79 = 39,403,081.18/x
3. Step 3: Cross multiply
   72,442,063.45x = 99,970,768.79 × 39,403,081.18
4. Step 4: Simplify right side
   72,442,063.45x = 3,939,156,318,259,380.50
5. Step 5: Solve for x
   x = 3,939,156,318,259,380.50/72,442,063.45
6. Step 6: Final answer
   x = 54,376,644.32