Finding the Fourth Proportional to 103,632.30, 155,218.05 and 89,808.30

Step by Step Solution

1. Step 1: Write the proportion equation
   103,632.30 : 155,218.05 = 89,808.30 : x
2. Step 2: Convert to fraction form
   103,632.30/155,218.05 = 89,808.30/x
3. Step 3: Cross multiply
   103,632.30x = 155,218.05 × 89,808.30
4. Step 4: Simplify right side
   103,632.30x = 13,939,869,199.82
5. Step 5: Solve for x
   x = 13,939,869,199.82/103,632.30
6. Step 6: Final answer
   x = 134,512.78