Finding the Fourth Proportional to 99,183.07, 148,615.71 and 89,111.80

Step by Step Solution

1. Step 1: Write the proportion equation
   99,183.07 : 148,615.71 = 89,111.80 : x
2. Step 2: Convert to fraction form
   99,183.07/148,615.71 = 89,111.80/x
3. Step 3: Cross multiply
   99,183.07x = 148,615.71 × 89,111.80
4. Step 4: Simplify right side
   99,183.07x = 13,243,413,426.38
5. Step 5: Solve for x
   x = 13,243,413,426.38/99,183.07
6. Step 6: Final answer
   x = 133,524.94