Finding the Fourth Proportional to 139,567.34, 209,420.26 and 55,325.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,567.34 : 209,420.26 = 55,325.72 : x
2. Step 2: Convert to fraction form
   139,567.34/209,420.26 = 55,325.72/x
3. Step 3: Cross multiply
   139,567.34x = 209,420.26 × 55,325.72
4. Step 4: Simplify right side
   139,567.34x = 11,586,326,667.09
5. Step 5: Solve for x
   x = 11,586,326,667.09/139,567.34
6. Step 6: Final answer
   x = 83,016.03