Finding the Fourth Proportional to 57,729,142.20, 79,666,231.20 and 31,624,588.05

Step by Step Solution

1. Step 1: Write the proportion equation
   57,729,142.20 : 79,666,231.20 = 31,624,588.05 : x
2. Step 2: Convert to fraction form
   57,729,142.20/79,666,231.20 = 31,624,588.05/x
3. Step 3: Cross multiply
   57,729,142.20x = 79,666,231.20 × 31,624,588.05
4. Step 4: Simplify right side
   57,729,142.20x = 2,519,411,743,196,057.50
5. Step 5: Solve for x
   x = 2,519,411,743,196,057.50/57,729,142.20
6. Step 6: Final answer
   x = 43,641,939.71