Finding the Fourth Proportional to 72,256.48, 99,682.32 and 55,460.32

Step by Step Solution

1. Step 1: Write the proportion equation
   72,256.48 : 99,682.32 = 55,460.32 : x
2. Step 2: Convert to fraction form
   72,256.48/99,682.32 = 55,460.32/x
3. Step 3: Cross multiply
   72,256.48x = 99,682.32 × 55,460.32
4. Step 4: Simplify right side
   72,256.48x = 5,528,413,365.54
5. Step 5: Solve for x
   x = 5,528,413,365.54/72,256.48
6. Step 6: Final answer
   x = 76,510.97