Finding the Fourth Proportional to 151,688,636.16, 209,328,825.60 and 82,072,488.96

Step by Step Solution

1. Step 1: Write the proportion equation
   151,688,636.16 : 209,328,825.60 = 82,072,488.96 : x
2. Step 2: Convert to fraction form
   151,688,636.16/209,328,825.60 = 82,072,488.96/x
3. Step 3: Cross multiply
   151,688,636.16x = 209,328,825.60 × 82,072,488.96
4. Step 4: Simplify right side
   151,688,636.16x = 17,180,137,728,065,764
5. Step 5: Solve for x
   x = 17,180,137,728,065,764/151,688,636.16
6. Step 6: Final answer
   x = 113,259,227.34