Finding the Fourth Proportional to 89,196.32, 123,174 and 57,420.24

Step by Step Solution

1. Step 1: Write the proportion equation
   89,196.32 : 123,174 = 57,420.24 : x
2. Step 2: Convert to fraction form
   89,196.32/123,174 = 57,420.24/x
3. Step 3: Cross multiply
   89,196.32x = 123,174 × 57,420.24
4. Step 4: Simplify right side
   89,196.32x = 7,072,680,641.76
5. Step 5: Solve for x
   x = 7,072,680,641.76/89,196.32
6. Step 6: Final answer
   x = 79,293.41