Finding the Fourth Proportional to 103,697.30, 155,315.55 and 89,873.30

Step by Step Solution

1. Step 1: Write the proportion equation
   103,697.30 : 155,315.55 = 89,873.30 : x
2. Step 2: Convert to fraction form
   103,697.30/155,315.55 = 89,873.30/x
3. Step 3: Cross multiply
   103,697.30x = 155,315.55 × 89,873.30
4. Step 4: Simplify right side
   103,697.30x = 13,958,721,019.82
5. Step 5: Solve for x
   x = 13,958,721,019.82/103,697.30
6. Step 6: Final answer
   x = 134,610.26