Finding the Fourth Proportional to 78,052.66, 117,057.72 and 21,889.28

Step by Step Solution

1. Step 1: Write the proportion equation
   78,052.66 : 117,057.72 = 21,889.28 : x
2. Step 2: Convert to fraction form
   78,052.66/117,057.72 = 21,889.28/x
3. Step 3: Cross multiply
   78,052.66x = 117,057.72 × 21,889.28
4. Step 4: Simplify right side
   78,052.66x = 2,562,309,501.89
5. Step 5: Solve for x
   x = 2,562,309,501.89/78,052.66
6. Step 6: Final answer
   x = 32,827.96