Finding the Fourth Proportional to 173,978,570.82, 260,795,477.85 and 81,697,115.98

Step by Step Solution

1. Step 1: Write the proportion equation
   173,978,570.82 : 260,795,477.85 = 81,697,115.98 : x
2. Step 2: Convert to fraction form
   173,978,570.82/260,795,477.85 = 81,697,115.98/x
3. Step 3: Cross multiply
   173,978,570.82x = 260,795,477.85 × 81,697,115.98
4. Step 4: Simplify right side
   173,978,570.82x = 21,306,238,400,990,600
5. Step 5: Solve for x
   x = 21,306,238,400,990,600/173,978,570.82
6. Step 6: Final answer
   x = 122,464,728.27