Finding the Fourth Proportional to 42,052,227.60, 62,978,808.60 and 28,515,766.80

Step by Step Solution

1. Step 1: Write the proportion equation
   42,052,227.60 : 62,978,808.60 = 28,515,766.80 : x
2. Step 2: Convert to fraction form
   42,052,227.60/62,978,808.60 = 28,515,766.80/x
3. Step 3: Cross multiply
   42,052,227.60x = 62,978,808.60 × 28,515,766.80
4. Step 4: Simplify right side
   42,052,227.60x = 1,795,889,019,379,434.50
5. Step 5: Solve for x
   x = 1,795,889,019,379,434.50/42,052,227.60
6. Step 6: Final answer
   x = 42,706,156.65