Finding the Fourth Proportional to 105,669,845.62, 158,542,524.69 and 64,254,982.21

Step by Step Solution

1. Step 1: Write the proportion equation
   105,669,845.62 : 158,542,524.69 = 64,254,982.21 : x
2. Step 2: Convert to fraction form
   105,669,845.62/158,542,524.69 = 64,254,982.21/x
3. Step 3: Cross multiply
   105,669,845.62x = 158,542,524.69 × 64,254,982.21
4. Step 4: Simplify right side
   105,669,845.62x = 10,187,147,103,484,436
5. Step 5: Solve for x
   x = 10,187,147,103,484,436/105,669,845.62
6. Step 6: Final answer
   x = 96,405,431.88