Finding the Fourth Proportional to 47,665.79, 71,499.19 and 14,386.15

Step by Step Solution

1. Step 1: Write the proportion equation
   47,665.79 : 71,499.19 = 14,386.15 : x
2. Step 2: Convert to fraction form
   47,665.79/71,499.19 = 14,386.15/x
3. Step 3: Cross multiply
   47,665.79x = 71,499.19 × 14,386.15
4. Step 4: Simplify right side
   47,665.79x = 1,028,598,072.22
5. Step 5: Solve for x
   x = 1,028,598,072.22/47,665.79
6. Step 6: Final answer
   x = 21,579.38