Finding the Fourth Proportional to 160,518.72, 240,762.72 and 55,323.20

Step by Step Solution

1. Step 1: Write the proportion equation
   160,518.72 : 240,762.72 = 55,323.20 : x
2. Step 2: Convert to fraction form
   160,518.72/240,762.72 = 55,323.20/x
3. Step 3: Cross multiply
   160,518.72x = 240,762.72 × 55,323.20
4. Step 4: Simplify right side
   160,518.72x = 13,319,764,111.10
5. Step 5: Solve for x
   x = 13,319,764,111.10/160,518.72
6. Step 6: Final answer
   x = 82,979.51