Finding the Fourth Proportional to 89,154.43, 123,045.72 and 55,173.87

Step by Step Solution

1. Step 1: Write the proportion equation
   89,154.43 : 123,045.72 = 55,173.87 : x
2. Step 2: Convert to fraction form
   89,154.43/123,045.72 = 55,173.87/x
3. Step 3: Cross multiply
   89,154.43x = 123,045.72 × 55,173.87
4. Step 4: Simplify right side
   89,154.43x = 6,788,908,559.34
5. Step 5: Solve for x
   x = 6,788,908,559.34/89,154.43
6. Step 6: Final answer
   x = 76,147.74