Finding the Fourth Proportional to 72,258.06, 99,750.18 and 54,359.88

Step by Step Solution

1. Step 1: Write the proportion equation
   72,258.06 : 99,750.18 = 54,359.88 : x
2. Step 2: Convert to fraction form
   72,258.06/99,750.18 = 54,359.88/x
3. Step 3: Cross multiply
   72,258.06x = 99,750.18 × 54,359.88
4. Step 4: Simplify right side
   72,258.06x = 5,422,407,814.78
5. Step 5: Solve for x
   x = 5,422,407,814.78/72,258.06
6. Step 6: Final answer
   x = 75,042.26