Finding the Fourth Proportional to 395,885.86, 593,746.71 and 139,753.06

Step by Step Solution

1. Step 1: Write the proportion equation
   395,885.86 : 593,746.71 = 139,753.06 : x
2. Step 2: Convert to fraction form
   395,885.86/593,746.71 = 139,753.06/x
3. Step 3: Cross multiply
   395,885.86x = 593,746.71 × 139,753.06
4. Step 4: Simplify right side
   395,885.86x = 82,977,919,587.43
5. Step 5: Solve for x
   x = 82,977,919,587.43/395,885.86
6. Step 6: Final answer
   x = 209,600.61