Finding the Fourth Proportional to 139,475.34, 209,214.48 and 55,256.01

Step by Step Solution

1. Step 1: Write the proportion equation
   139,475.34 : 209,214.48 = 55,256.01 : x
2. Step 2: Convert to fraction form
   139,475.34/209,214.48 = 55,256.01/x
3. Step 3: Cross multiply
   139,475.34x = 209,214.48 × 55,256.01
4. Step 4: Simplify right side
   139,475.34x = 11,560,357,399.02
5. Step 5: Solve for x
   x = 11,560,357,399.02/139,475.34
6. Step 6: Final answer
   x = 82,884.60