Finding the Fourth Proportional to 102,955.86, 142,081.49 and 57,632.72

Step by Step Solution

1. Step 1: Write the proportion equation
   102,955.86 : 142,081.49 = 57,632.72 : x
2. Step 2: Convert to fraction form
   102,955.86/142,081.49 = 57,632.72/x
3. Step 3: Cross multiply
   102,955.86x = 142,081.49 × 57,632.72
4. Step 4: Simplify right side
   102,955.86x = 8,188,542,164.03
5. Step 5: Solve for x
   x = 8,188,542,164.03/102,955.86
6. Step 6: Final answer
   x = 79,534.49