Finding the Fourth Proportional to 103,634.30, 155,221.05 and 89,810.30

Step by Step Solution

1. Step 1: Write the proportion equation
   103,634.30 : 155,221.05 = 89,810.30 : x
2. Step 2: Convert to fraction form
   103,634.30/155,221.05 = 89,810.30/x
3. Step 3: Cross multiply
   103,634.30x = 155,221.05 × 89,810.30
4. Step 4: Simplify right side
   103,634.30x = 13,940,449,066.82
5. Step 5: Solve for x
   x = 13,940,449,066.82/103,634.30
6. Step 6: Final answer
   x = 134,515.78