Finding the Fourth Proportional to 219,475.25, 302,900.43 and 123,988.10

Step by Step Solution

1. Step 1: Write the proportion equation
   219,475.25 : 302,900.43 = 123,988.10 : x
2. Step 2: Convert to fraction form
   219,475.25/302,900.43 = 123,988.10/x
3. Step 3: Cross multiply
   219,475.25x = 302,900.43 × 123,988.10
4. Step 4: Simplify right side
   219,475.25x = 37,556,047,290.38
5. Step 5: Solve for x
   x = 37,556,047,290.38/219,475.25
6. Step 6: Final answer
   x = 171,117.46