Finding the Fourth Proportional to 219,012.21, 302,241.24 and 123,500.25

Step by Step Solution

1. Step 1: Write the proportion equation
   219,012.21 : 302,241.24 = 123,500.25 : x
2. Step 2: Convert to fraction form
   219,012.21/302,241.24 = 123,500.25/x
3. Step 3: Cross multiply
   219,012.21x = 302,241.24 × 123,500.25
4. Step 4: Simplify right side
   219,012.21x = 37,326,868,700.31
5. Step 5: Solve for x
   x = 37,326,868,700.31/219,012.21
6. Step 6: Final answer
   x = 170,432.82