Finding the Fourth Proportional to 910,033,499.29, 1,256,713,540.74 and 860,455,015.50

Step by Step Solution

1. Step 1: Write the proportion equation
   910,033,499.29 : 1,256,713,540.74 = 860,455,015.50 : x
2. Step 2: Convert to fraction form
   910,033,499.29/1,256,713,540.74 = 860,455,015.50/x
3. Step 3: Cross multiply
   910,033,499.29x = 1,256,713,540.74 × 860,455,015.50
4. Step 4: Simplify right side
   910,033,499.29x = 1,081,345,469,170,212,992
5. Step 5: Solve for x
   x = 1,081,345,469,170,212,992/910,033,499.29
6. Step 6: Final answer
   x = 1,188,247,982.10