Finding the Fourth Proportional to 89,448.42, 123,547.08 and 65,211

Step by Step Solution

1. Step 1: Write the proportion equation
   89,448.42 : 123,547.08 = 65,211 : x
2. Step 2: Convert to fraction form
   89,448.42/123,547.08 = 65,211/x
3. Step 3: Cross multiply
   89,448.42x = 123,547.08 × 65,211
4. Step 4: Simplify right side
   89,448.42x = 8,056,628,633.88
5. Step 5: Solve for x
   x = 8,056,628,633.88/89,448.42
6. Step 6: Final answer
   x = 90,070.11