Finding the Fourth Proportional to 248,109.69, 342,245.59 and 156,082.62

Step by Step Solution

1. Step 1: Write the proportion equation
   248,109.69 : 342,245.59 = 156,082.62 : x
2. Step 2: Convert to fraction form
   248,109.69/342,245.59 = 156,082.62/x
3. Step 3: Cross multiply
   248,109.69x = 342,245.59 × 156,082.62
4. Step 4: Simplify right side
   248,109.69x = 53,418,588,370.65
5. Step 5: Solve for x
   x = 53,418,588,370.65/248,109.69
6. Step 6: Final answer
   x = 215,302.31