Finding the Fourth Proportional to 415,155.42, 572,920.83 and 245,405.34

Step by Step Solution

1. Step 1: Write the proportion equation
   415,155.42 : 572,920.83 = 245,405.34 : x
2. Step 2: Convert to fraction form
   415,155.42/572,920.83 = 245,405.34/x
3. Step 3: Cross multiply
   415,155.42x = 572,920.83 × 245,405.34
4. Step 4: Simplify right side
   415,155.42x = 140,597,831,079.23
5. Step 5: Solve for x
   x = 140,597,831,079.23/415,155.42
6. Step 6: Final answer
   x = 338,663.12