Finding the Fourth Proportional to 300,061.90, 414,124.59 and 172,742.86

Step by Step Solution

1. Step 1: Write the proportion equation
   300,061.90 : 414,124.59 = 172,742.86 : x
2. Step 2: Convert to fraction form
   300,061.90/414,124.59 = 172,742.86/x
3. Step 3: Cross multiply
   300,061.90x = 414,124.59 × 172,742.86
4. Step 4: Simplify right side
   300,061.90x = 71,537,066,072.93
5. Step 5: Solve for x
   x = 71,537,066,072.93/300,061.90
6. Step 6: Final answer
   x = 238,407.70