Finding the Fourth Proportional to 89,272.72, 123,254.07 and 55,317.24

Step by Step Solution

1. Step 1: Write the proportion equation
   89,272.72 : 123,254.07 = 55,317.24 : x
2. Step 2: Convert to fraction form
   89,272.72/123,254.07 = 55,317.24/x
3. Step 3: Cross multiply
   89,272.72x = 123,254.07 × 55,317.24
4. Step 4: Simplify right side
   89,272.72x = 6,818,074,763.73
5. Step 5: Solve for x
   x = 6,818,074,763.73/89,272.72
6. Step 6: Final answer
   x = 76,373.55