Finding the Fourth Proportional to 72,089.32, 99,483.06 and 40,258.24

Step by Step Solution

1. Step 1: Write the proportion equation
   72,089.32 : 99,483.06 = 40,258.24 : x
2. Step 2: Convert to fraction form
   72,089.32/99,483.06 = 40,258.24/x
3. Step 3: Cross multiply
   72,089.32x = 99,483.06 × 40,258.24
4. Step 4: Simplify right side
   72,089.32x = 4,005,012,905.41
5. Step 5: Solve for x
   x = 4,005,012,905.41/72,089.32
6. Step 6: Final answer
   x = 55,556.26