Finding the Fourth Proportional to 139,475.04, 209,971.52 and 127,074.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,475.04 : 209,971.52 = 127,074.72 : x
2. Step 2: Convert to fraction form
   139,475.04/209,971.52 = 127,074.72/x
3. Step 3: Cross multiply
   139,475.04x = 209,971.52 × 127,074.72
4. Step 4: Simplify right side
   139,475.04x = 26,682,072,111.97
5. Step 5: Solve for x
   x = 26,682,072,111.97/139,475.04
6. Step 6: Final answer
   x = 191,303.56