Finding the Fourth Proportional to 99,016.41, 148,282.38 and 89,420.96

Step by Step Solution

1. Step 1: Write the proportion equation
   99,016.41 : 148,282.38 = 89,420.96 : x
2. Step 2: Convert to fraction form
   99,016.41/148,282.38 = 89,420.96/x
3. Step 3: Cross multiply
   99,016.41x = 148,282.38 × 89,420.96
4. Step 4: Simplify right side
   99,016.41x = 13,259,552,029.27
5. Step 5: Solve for x
   x = 13,259,552,029.27/99,016.41
6. Step 6: Final answer
   x = 133,912.67