Finding the Fourth Proportional to 47,412,196.80, 71,118,295.20 and 42,485,323.20

Step by Step Solution

1. Step 1: Write the proportion equation
   47,412,196.80 : 71,118,295.20 = 42,485,323.20 : x
2. Step 2: Convert to fraction form
   47,412,196.80/71,118,295.20 = 42,485,323.20/x
3. Step 3: Cross multiply
   47,412,196.80x = 71,118,295.20 × 42,485,323.20
4. Step 4: Simplify right side
   47,412,196.80x = 3,021,483,757,005,009
5. Step 5: Solve for x
   x = 3,021,483,757,005,009/47,412,196.80
6. Step 6: Final answer
   x = 63,727,984.80