Finding the Fourth Proportional to 49,930.58, 74,870.78 and 16,638.98

Step by Step Solution

1. Step 1: Write the proportion equation
   49,930.58 : 74,870.78 = 16,638.98 : x
2. Step 2: Convert to fraction form
   49,930.58/74,870.78 = 16,638.98/x
3. Step 3: Cross multiply
   49,930.58x = 74,870.78 × 16,638.98
4. Step 4: Simplify right side
   49,930.58x = 1,245,773,411.00
5. Step 5: Solve for x
   x = 1,245,773,411.00/49,930.58
6. Step 6: Final answer
   x = 24,950.11