Finding the Fourth Proportional to 139,935.86, 209,771.52 and 55,748.04

Step by Step Solution

1. Step 1: Write the proportion equation
   139,935.86 : 209,771.52 = 55,748.04 : x
2. Step 2: Convert to fraction form
   139,935.86/209,771.52 = 55,748.04/x
3. Step 3: Cross multiply
   139,935.86x = 209,771.52 × 55,748.04
4. Step 4: Simplify right side
   139,935.86x = 11,694,351,087.82
5. Step 5: Solve for x
   x = 11,694,351,087.82/139,935.86
6. Step 6: Final answer
   x = 83,569.37