Finding the Fourth Proportional to 89,339.34, 123,345.99 and 55,384.12

Step by Step Solution

1. Step 1: Write the proportion equation
   89,339.34 : 123,345.99 = 55,384.12 : x
2. Step 2: Convert to fraction form
   89,339.34/123,345.99 = 55,384.12/x
3. Step 3: Cross multiply
   89,339.34x = 123,345.99 × 55,384.12
4. Step 4: Simplify right side
   89,339.34x = 6,831,408,218.03
5. Step 5: Solve for x
   x = 6,831,408,218.03/89,339.34
6. Step 6: Final answer
   x = 76,465.85