Finding the Fourth Proportional to 89,341.34, 123,348.75 and 55,386.12

Step by Step Solution

1. Step 1: Write the proportion equation
   89,341.34 : 123,348.75 = 55,386.12 : x
2. Step 2: Convert to fraction form
   89,341.34/123,348.75 = 55,386.12/x
3. Step 3: Cross multiply
   89,341.34x = 123,348.75 × 55,386.12
4. Step 4: Simplify right side
   89,341.34x = 6,831,808,669.35
5. Step 5: Solve for x
   x = 6,831,808,669.35/89,341.34
6. Step 6: Final answer
   x = 76,468.62