Finding the Fourth Proportional to 89,486.75, 123,443.11 and 55,483.76

Step by Step Solution

1. Step 1: Write the proportion equation
   89,486.75 : 123,443.11 = 55,483.76 : x
2. Step 2: Convert to fraction form
   89,486.75/123,443.11 = 55,483.76/x
3. Step 3: Cross multiply
   89,486.75x = 123,443.11 × 55,483.76
4. Step 4: Simplify right side
   89,486.75x = 6,849,087,888.89
5. Step 5: Solve for x
   x = 6,849,087,888.89/89,486.75
6. Step 6: Final answer
   x = 76,537.45