Finding the Fourth Proportional to 89,190.64, 123,166.40 and 57,414.76

Step by Step Solution

1. Step 1: Write the proportion equation
   89,190.64 : 123,166.40 = 57,414.76 : x
2. Step 2: Convert to fraction form
   89,190.64/123,166.40 = 57,414.76/x
3. Step 3: Cross multiply
   89,190.64x = 123,166.40 × 57,414.76
4. Step 4: Simplify right side
   89,190.64x = 7,071,569,296.06
5. Step 5: Solve for x
   x = 7,071,569,296.06/89,190.64
6. Step 6: Final answer
   x = 79,286.00