Finding the Fourth Proportional to 89,411.04, 123,373.53 and 51,678

Step by Step Solution

1. Step 1: Write the proportion equation
   89,411.04 : 123,373.53 = 51,678 : x
2. Step 2: Convert to fraction form
   89,411.04/123,373.53 = 51,678/x
3. Step 3: Cross multiply
   89,411.04x = 123,373.53 × 51,678
4. Step 4: Simplify right side
   89,411.04x = 6,375,697,283.34
5. Step 5: Solve for x
   x = 6,375,697,283.34/89,411.04
6. Step 6: Final answer
   x = 71,307.72