Finding the Fourth Proportional to 71,978,237.76, 107,970,429.32 and 28,268,469.12

Step by Step Solution

1. Step 1: Write the proportion equation
   71,978,237.76 : 107,970,429.32 = 28,268,469.12 : x
2. Step 2: Convert to fraction form
   71,978,237.76/107,970,429.32 = 28,268,469.12/x
3. Step 3: Cross multiply
   71,978,237.76x = 107,970,429.32 × 28,268,469.12
4. Step 4: Simplify right side
   71,978,237.76x = 3,052,158,747,105,562.50
5. Step 5: Solve for x
   x = 3,052,158,747,105,562.50/71,978,237.76
6. Step 6: Final answer
   x = 42,403,910.43