Finding the Fourth Proportional to 260,355,986.48, 359,267,513.72 and 154,491,158.90

Step by Step Solution

1. Step 1: Write the proportion equation
   260,355,986.48 : 359,267,513.72 = 154,491,158.90 : x
2. Step 2: Convert to fraction form
   260,355,986.48/359,267,513.72 = 154,491,158.90/x
3. Step 3: Cross multiply
   260,355,986.48x = 359,267,513.72 × 154,491,158.90
4. Step 4: Simplify right side
   260,355,986.48x = 55,503,654,549,724,456
5. Step 5: Solve for x
   x = 55,503,654,549,724,456/260,355,986.48
6. Step 6: Final answer
   x = 213,183,707.82