Finding the Fourth Proportional to 434,126,404.50, 599,026,998.33 and 257,909,870.94

Step by Step Solution

1. Step 1: Write the proportion equation
   434,126,404.50 : 599,026,998.33 = 257,909,870.94 : x
2. Step 2: Convert to fraction form
   434,126,404.50/599,026,998.33 = 257,909,870.94/x
3. Step 3: Cross multiply
   434,126,404.50x = 599,026,998.33 × 257,909,870.94
4. Step 4: Simplify right side
   434,126,404.50x = 154,494,975,828,865,920
5. Step 5: Solve for x
   x = 154,494,975,828,865,920/434,126,404.50
6. Step 6: Final answer
   x = 355,875,556.58