Finding the Fourth Proportional to 340,046.58, 510,098.43 and 103,391.31

Step by Step Solution

1. Step 1: Write the proportion equation
   340,046.58 : 510,098.43 = 103,391.31 : x
2. Step 2: Convert to fraction form
   340,046.58/510,098.43 = 103,391.31/x
3. Step 3: Cross multiply
   340,046.58x = 510,098.43 × 103,391.31
4. Step 4: Simplify right side
   340,046.58x = 52,739,745,156.55
5. Step 5: Solve for x
   x = 52,739,745,156.55/340,046.58
6. Step 6: Final answer
   x = 155,095.65