Finding the Fourth Proportional to 279,065.82, 418,559.30 and 89,501.55

Step by Step Solution

1. Step 1: Write the proportion equation
   279,065.82 : 418,559.30 = 89,501.55 : x
2. Step 2: Convert to fraction form
   279,065.82/418,559.30 = 89,501.55/x
3. Step 3: Cross multiply
   279,065.82x = 418,559.30 × 89,501.55
4. Step 4: Simplify right side
   279,065.82x = 37,461,706,116.92
5. Step 5: Solve for x
   x = 37,461,706,116.92/279,065.82
6. Step 6: Final answer
   x = 134,239.68