Finding the Fourth Proportional to 89,154.12, 123,045.30 and 55,173.55

Step by Step Solution

1. Step 1: Write the proportion equation
   89,154.12 : 123,045.30 = 55,173.55 : x
2. Step 2: Convert to fraction form
   89,154.12/123,045.30 = 55,173.55/x
3. Step 3: Cross multiply
   89,154.12x = 123,045.30 × 55,173.55
4. Step 4: Simplify right side
   89,154.12x = 6,788,846,011.82
5. Step 5: Solve for x
   x = 6,788,846,011.82/89,154.12
6. Step 6: Final answer
   x = 76,147.31