Finding the Fourth Proportional to 340,498.67, 469,891.42 and 187,540.32

Step by Step Solution

1. Step 1: Write the proportion equation
   340,498.67 : 469,891.42 = 187,540.32 : x
2. Step 2: Convert to fraction form
   340,498.67/469,891.42 = 187,540.32/x
3. Step 3: Cross multiply
   340,498.67x = 469,891.42 × 187,540.32
4. Step 4: Simplify right side
   340,498.67x = 88,123,586,803.20
5. Step 5: Solve for x
   x = 88,123,586,803.20/340,498.67
6. Step 6: Final answer
   x = 258,807.44