Finding the Fourth Proportional to 72,220.41, 99,456.26 and 59,528.52

Step by Step Solution

1. Step 1: Write the proportion equation
   72,220.41 : 99,456.26 = 59,528.52 : x
2. Step 2: Convert to fraction form
   72,220.41/99,456.26 = 59,528.52/x
3. Step 3: Cross multiply
   72,220.41x = 99,456.26 × 59,528.52
4. Step 4: Simplify right side
   72,220.41x = 5,920,483,664.89
5. Step 5: Solve for x
   x = 5,920,483,664.89/72,220.41
6. Step 6: Final answer
   x = 81,977.98