Finding the Fourth Proportional to 72,526.52, 108,578.48 and 53,889.17

Step by Step Solution

1. Step 1: Write the proportion equation
   72,526.52 : 108,578.48 = 53,889.17 : x
2. Step 2: Convert to fraction form
   72,526.52/108,578.48 = 53,889.17/x
3. Step 3: Cross multiply
   72,526.52x = 108,578.48 × 53,889.17
4. Step 4: Simplify right side
   72,526.52x = 5,851,203,354.72
5. Step 5: Solve for x
   x = 5,851,203,354.72/72,526.52
6. Step 6: Final answer
   x = 80,676.74