Finding the Fourth Proportional to 309,978,436.24, 427,800,487.80 and 231,525,934.84

Step by Step Solution

1. Step 1: Write the proportion equation
   309,978,436.24 : 427,800,487.80 = 231,525,934.84 : x
2. Step 2: Convert to fraction form
   309,978,436.24/427,800,487.80 = 231,525,934.84/x
3. Step 3: Cross multiply
   309,978,436.24x = 427,800,487.80 × 231,525,934.84
4. Step 4: Simplify right side
   309,978,436.24x = 99,046,907,862,903,024
5. Step 5: Solve for x
   x = 99,046,907,862,903,024/309,978,436.24
6. Step 6: Final answer
   x = 319,528,380.96