Finding the Fourth Proportional to 199,593.58, 274,971.27 and 139,054.72

Step by Step Solution

1. Step 1: Write the proportion equation
   199,593.58 : 274,971.27 = 139,054.72 : x
2. Step 2: Convert to fraction form
   199,593.58/274,971.27 = 139,054.72/x
3. Step 3: Cross multiply
   199,593.58x = 274,971.27 × 139,054.72
4. Step 4: Simplify right side
   199,593.58x = 38,236,052,957.89
5. Step 5: Solve for x
   x = 38,236,052,957.89/199,593.58
6. Step 6: Final answer
   x = 191,569.55