Finding the Fourth Proportional to 107,428.96, 148,269.72 and 89,495.56

Step by Step Solution

1. Step 1: Write the proportion equation
   107,428.96 : 148,269.72 = 89,495.56 : x
2. Step 2: Convert to fraction form
   107,428.96/148,269.72 = 89,495.56/x
3. Step 3: Cross multiply
   107,428.96x = 148,269.72 × 89,495.56
4. Step 4: Simplify right side
   107,428.96x = 13,269,481,622.44
5. Step 5: Solve for x
   x = 13,269,481,622.44/107,428.96
6. Step 6: Final answer
   x = 123,518.66