Finding the Fourth Proportional to 89,373.84, 123,342.51 and 55,389

Step by Step Solution

1. Step 1: Write the proportion equation
   89,373.84 : 123,342.51 = 55,389 : x
2. Step 2: Convert to fraction form
   89,373.84/123,342.51 = 55,389/x
3. Step 3: Cross multiply
   89,373.84x = 123,342.51 × 55,389
4. Step 4: Simplify right side
   89,373.84x = 6,831,818,286.39
5. Step 5: Solve for x
   x = 6,831,818,286.39/89,373.84
6. Step 6: Final answer
   x = 76,440.92