Finding the Fourth Proportional to 89,373.59, 123,342.17 and 55,388.73

Step by Step Solution

1. Step 1: Write the proportion equation
   89,373.59 : 123,342.17 = 55,388.73 : x
2. Step 2: Convert to fraction form
   89,373.59/123,342.17 = 55,388.73/x
3. Step 3: Cross multiply
   89,373.59x = 123,342.17 × 55,388.73
4. Step 4: Simplify right side
   89,373.59x = 6,831,766,151.74
5. Step 5: Solve for x
   x = 6,831,766,151.74/89,373.59
6. Step 6: Final answer
   x = 76,440.55