Finding the Fourth Proportional to 723,010,548.71, 997,684,838.82 and 405,483,685.31

Step by Step Solution

1. Step 1: Write the proportion equation
   723,010,548.71 : 997,684,838.82 = 405,483,685.31 : x
2. Step 2: Convert to fraction form
   723,010,548.71/997,684,838.82 = 405,483,685.31/x
3. Step 3: Cross multiply
   723,010,548.71x = 997,684,838.82 × 405,483,685.31
4. Step 4: Simplify right side
   723,010,548.71x = 404,544,925,217,658,560
5. Step 5: Solve for x
   x = 404,544,925,217,658,560/723,010,548.71
6. Step 6: Final answer
   x = 559,528,385.78