Finding the Fourth Proportional to 89,424.80, 123,370.86 and 57,612.25

Step by Step Solution

1. Step 1: Write the proportion equation
   89,424.80 : 123,370.86 = 57,612.25 : x
2. Step 2: Convert to fraction form
   89,424.80/123,370.86 = 57,612.25/x
3. Step 3: Cross multiply
   89,424.80x = 123,370.86 × 57,612.25
4. Step 4: Simplify right side
   89,424.80x = 7,107,672,829.04
5. Step 5: Solve for x
   x = 7,107,672,829.04/89,424.80
6. Step 6: Final answer
   x = 79,482.12