Finding the Fourth Proportional to 340,369.71, 469,693.80 and 187,404.72

Step by Step Solution

1. Step 1: Write the proportion equation
   340,369.71 : 469,693.80 = 187,404.72 : x
2. Step 2: Convert to fraction form
   340,369.71/469,693.80 = 187,404.72/x
3. Step 3: Cross multiply
   340,369.71x = 469,693.80 × 187,404.72
4. Step 4: Simplify right side
   340,369.71x = 88,022,835,074.74
5. Step 5: Solve for x
   x = 88,022,835,074.74/340,369.71
6. Step 6: Final answer
   x = 258,609.48