Finding the Fourth Proportional to 203,404.56, 280,697.52 and 113,980.56

Step by Step Solution

1. Step 1: Write the proportion equation
   203,404.56 : 280,697.52 = 113,980.56 : x
2. Step 2: Convert to fraction form
   203,404.56/280,697.52 = 113,980.56/x
3. Step 3: Cross multiply
   203,404.56x = 280,697.52 × 113,980.56
4. Step 4: Simplify right side
   203,404.56x = 31,994,060,520.21
5. Step 5: Solve for x
   x = 31,994,060,520.21/203,404.56
6. Step 6: Final answer
   x = 157,292.74