Finding the Fourth Proportional to 51,980.74, 77,980.72 and 16,451

Step by Step Solution

1. Step 1: Write the proportion equation
   51,980.74 : 77,980.72 = 16,451 : x
2. Step 2: Convert to fraction form
   51,980.74/77,980.72 = 16,451/x
3. Step 3: Cross multiply
   51,980.74x = 77,980.72 × 16,451
4. Step 4: Simplify right side
   51,980.74x = 1,282,860,824.72
5. Step 5: Solve for x
   x = 1,282,860,824.72/51,980.74
6. Step 6: Final answer
   x = 24,679.54