Finding the Fourth Proportional to 89,588.67, 123,580.94 and 55,996.35

Step by Step Solution

1. Step 1: Write the proportion equation
   89,588.67 : 123,580.94 = 55,996.35 : x
2. Step 2: Convert to fraction form
   89,588.67/123,580.94 = 55,996.35/x
3. Step 3: Cross multiply
   89,588.67x = 123,580.94 × 55,996.35
4. Step 4: Simplify right side
   89,588.67x = 6,920,081,289.59
5. Step 5: Solve for x
   x = 6,920,081,289.59/89,588.67
6. Step 6: Final answer
   x = 77,242.82