Finding the Fourth Proportional to 337,069,061.40, 505,981,505.70 and 260,730,514.20

Step by Step Solution

1. Step 1: Write the proportion equation
   337,069,061.40 : 505,981,505.70 = 260,730,514.20 : x
2. Step 2: Convert to fraction form
   337,069,061.40/505,981,505.70 = 260,730,514.20/x
3. Step 3: Cross multiply
   337,069,061.40x = 505,981,505.70 × 260,730,514.20
4. Step 4: Simplify right side
   337,069,061.40x = 131,924,818,156,851,216
5. Step 5: Solve for x
   x = 131,924,818,156,851,216/337,069,061.40
6. Step 6: Final answer
   x = 391,388,095.99