Finding the Fourth Proportional to 487,782,757.50, 731,817,870.24 and 196,499,992.38

Step by Step Solution

1. Step 1: Write the proportion equation
   487,782,757.50 : 731,817,870.24 = 196,499,992.38 : x
2. Step 2: Convert to fraction form
   487,782,757.50/731,817,870.24 = 196,499,992.38/x
3. Step 3: Cross multiply
   487,782,757.50x = 731,817,870.24 × 196,499,992.38
4. Step 4: Simplify right side
   487,782,757.50x = 143,802,205,925,707,824
5. Step 5: Solve for x
   x = 143,802,205,925,707,824/487,782,757.50
6. Step 6: Final answer
   x = 294,807,890.84