Finding the Fourth Proportional to 623,038,424.76, 860,057,762.88 and 388,205,111.22

Step by Step Solution

1. Step 1: Write the proportion equation
   623,038,424.76 : 860,057,762.88 = 388,205,111.22 : x
2. Step 2: Convert to fraction form
   623,038,424.76/860,057,762.88 = 388,205,111.22/x
3. Step 3: Cross multiply
   623,038,424.76x = 860,057,762.88 × 388,205,111.22
4. Step 4: Simplify right side
   623,038,424.76x = 333,878,819,494,454,784
5. Step 5: Solve for x
   x = 333,878,819,494,454,784/623,038,424.76
6. Step 6: Final answer
   x = 535,888,006.62