Finding the Fourth Proportional to 89,064.46, 122,992.20 and 57,288.52

Step by Step Solution

1. Step 1: Write the proportion equation
   89,064.46 : 122,992.20 = 57,288.52 : x
2. Step 2: Convert to fraction form
   89,064.46/122,992.20 = 57,288.52/x
3. Step 3: Cross multiply
   89,064.46x = 122,992.20 × 57,288.52
4. Step 4: Simplify right side
   89,064.46x = 7,046,041,109.54
5. Step 5: Solve for x
   x = 7,046,041,109.54/89,064.46
6. Step 6: Final answer
   x = 79,111.70