Finding the Fourth Proportional to 565,540.30, 848,302.98 and 139,079.82

Step by Step Solution

1. Step 1: Write the proportion equation
   565,540.30 : 848,302.98 = 139,079.82 : x
2. Step 2: Convert to fraction form
   565,540.30/848,302.98 = 139,079.82/x
3. Step 3: Cross multiply
   565,540.30x = 848,302.98 × 139,079.82
4. Step 4: Simplify right side
   565,540.30x = 117,981,825,763.86
5. Step 5: Solve for x
   x = 117,981,825,763.86/565,540.30
6. Step 6: Final answer
   x = 208,617.89