Finding the Fourth Proportional to 1,321,156,085.62, 1,981,689,245.68 and 338,592,272.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,321,156,085.62 : 1,981,689,245.68 = 338,592,272.98 : x
2. Step 2: Convert to fraction form
   1,321,156,085.62/1,981,689,245.68 = 338,592,272.98/x
3. Step 3: Cross multiply
   1,321,156,085.62x = 1,981,689,245.68 × 338,592,272.98
4. Step 4: Simplify right side
   1,321,156,085.62x = 670,984,666,034,812,928
5. Step 5: Solve for x
   x = 670,984,666,034,812,928/1,321,156,085.62
6. Step 6: Final answer
   x = 507,876,906.70