Finding the Fourth Proportional to 91,526.36, 137,076.30 and 89,003.79

Step by Step Solution

1. Step 1: Write the proportion equation
   91,526.36 : 137,076.30 = 89,003.79 : x
2. Step 2: Convert to fraction form
   91,526.36/137,076.30 = 89,003.79/x
3. Step 3: Cross multiply
   91,526.36x = 137,076.30 × 89,003.79
4. Step 4: Simplify right side
   91,526.36x = 12,200,310,159.09
5. Step 5: Solve for x
   x = 12,200,310,159.09/91,526.36
6. Step 6: Final answer
   x = 133,298.33