Finding the Fourth Proportional to 89,444.46, 123,445.06 and 57,705.68

Step by Step Solution

1. Step 1: Write the proportion equation
   89,444.46 : 123,445.06 = 57,705.68 : x
2. Step 2: Convert to fraction form
   89,444.46/123,445.06 = 57,705.68/x
3. Step 3: Cross multiply
   89,444.46x = 123,445.06 × 57,705.68
4. Step 4: Simplify right side
   89,444.46x = 7,123,481,129.94
5. Step 5: Solve for x
   x = 7,123,481,129.94/89,444.46
6. Step 6: Final answer
   x = 79,641.39