Finding the Fourth Proportional to 89,865.18, 123,958.98 and 57,588.93

Step by Step Solution

1. Step 1: Write the proportion equation
   89,865.18 : 123,958.98 = 57,588.93 : x
2. Step 2: Convert to fraction form
   89,865.18/123,958.98 = 57,588.93/x
3. Step 3: Cross multiply
   89,865.18x = 123,958.98 × 57,588.93
4. Step 4: Simplify right side
   89,865.18x = 7,138,665,022.09
5. Step 5: Solve for x
   x = 7,138,665,022.09/89,865.18
6. Step 6: Final answer
   x = 79,437.50