Finding the Fourth Proportional to 40,978.26, 61,428.51 and 14,669.46

Step by Step Solution

1. Step 1: Write the proportion equation
   40,978.26 : 61,428.51 = 14,669.46 : x
2. Step 2: Convert to fraction form
   40,978.26/61,428.51 = 14,669.46/x
3. Step 3: Cross multiply
   40,978.26x = 61,428.51 × 14,669.46
4. Step 4: Simplify right side
   40,978.26x = 901,123,070.30
5. Step 5: Solve for x
   x = 901,123,070.30/40,978.26
6. Step 6: Final answer
   x = 21,990.27