Finding the Fourth Proportional to 89,319.63, 123,235.83 and 57,506.94

Step by Step Solution

1. Step 1: Write the proportion equation
   89,319.63 : 123,235.83 = 57,506.94 : x
2. Step 2: Convert to fraction form
   89,319.63/123,235.83 = 57,506.94/x
3. Step 3: Cross multiply
   89,319.63x = 123,235.83 × 57,506.94
4. Step 4: Simplify right side
   89,319.63x = 7,086,915,481.66
5. Step 5: Solve for x
   x = 7,086,915,481.66/89,319.63
6. Step 6: Final answer
   x = 79,343.31