Finding the Fourth Proportional to 139,486.32, 209,108.52 and 56,326.32

Step by Step Solution

1. Step 1: Write the proportion equation
   139,486.32 : 209,108.52 = 56,326.32 : x
2. Step 2: Convert to fraction form
   139,486.32/209,108.52 = 56,326.32/x
3. Step 3: Cross multiply
   139,486.32x = 209,108.52 × 56,326.32
4. Step 4: Simplify right side
   139,486.32x = 11,778,313,412.25
5. Step 5: Solve for x
   x = 11,778,313,412.25/139,486.32
6. Step 6: Final answer
   x = 84,440.63