Finding the Fourth Proportional to 213,111.20, 294,131.60 and 127,075.74

Step by Step Solution

1. Step 1: Write the proportion equation
   213,111.20 : 294,131.60 = 127,075.74 : x
2. Step 2: Convert to fraction form
   213,111.20/294,131.60 = 127,075.74/x
3. Step 3: Cross multiply
   213,111.20x = 294,131.60 × 127,075.74
4. Step 4: Simplify right side
   213,111.20x = 37,376,990,092.01
5. Step 5: Solve for x
   x = 37,376,990,092.01/213,111.20
6. Step 6: Final answer
   x = 175,387.27