Finding the Fourth Proportional to 139,565.34, 209,417.27 and 55,323.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,565.34 : 209,417.27 = 55,323.72 : x
2. Step 2: Convert to fraction form
   139,565.34/209,417.27 = 55,323.72/x
3. Step 3: Cross multiply
   139,565.34x = 209,417.27 × 55,323.72
4. Step 4: Simplify right side
   139,565.34x = 11,585,742,132.03
5. Step 5: Solve for x
   x = 11,585,742,132.03/139,565.34
6. Step 6: Final answer
   x = 83,013.03