Finding the Fourth Proportional to 40,978.76, 61,429.26 and 14,669.96

Step by Step Solution

1. Step 1: Write the proportion equation
   40,978.76 : 61,429.26 = 14,669.96 : x
2. Step 2: Convert to fraction form
   40,978.76/61,429.26 = 14,669.96/x
3. Step 3: Cross multiply
   40,978.76x = 61,429.26 × 14,669.96
4. Step 4: Simplify right side
   40,978.76x = 901,164,787.03
5. Step 5: Solve for x
   x = 901,164,787.03/40,978.76
6. Step 6: Final answer
   x = 21,991.02