Finding the Fourth Proportional to 623,627,499.69, 860,595,510.47 and 345,163,061.61

Step by Step Solution

1. Step 1: Write the proportion equation
   623,627,499.69 : 860,595,510.47 = 345,163,061.61 : x
2. Step 2: Convert to fraction form
   623,627,499.69/860,595,510.47 = 345,163,061.61/x
3. Step 3: Cross multiply
   623,627,499.69x = 860,595,510.47 × 345,163,061.61
4. Step 4: Simplify right side
   623,627,499.69x = 297,045,781,199,920,192
5. Step 5: Solve for x
   x = 297,045,781,199,920,192/623,627,499.69
6. Step 6: Final answer
   x = 476,319,247.22