Finding the Fourth Proportional to 89,429, 123,412.02 and 51,705.68

Step by Step Solution

1. Step 1: Write the proportion equation
   89,429 : 123,412.02 = 51,705.68 : x
2. Step 2: Convert to fraction form
   89,429/123,412.02 = 51,705.68/x
3. Step 3: Cross multiply
   89,429x = 123,412.02 × 51,705.68
4. Step 4: Simplify right side
   89,429x = 6,381,102,414.27
5. Step 5: Solve for x
   x = 6,381,102,414.27/89,429
6. Step 6: Final answer
   x = 71,353.84